The Abicana webstore - jewelry, gemstones and noble metals

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BACK TO MAIN MENU WITH THE FULL PRESENTATION OF GOODS FROM VARIOUS FIELDS



Jewelry, watches and fashion

Welcome to this online presentation quality jewelry, watches and apparel for an affordable prize. Pleace click on the banners to read more or to make a purchase.



Good online shops to find jewelry and watches

Here are presented some good online shops for jewelry, watches and other apparal to ornate any part of youreslf. There are ornates of all types of noble metals and noble stones, and there are jewelry pieces of any kind of shape and for any placement on the body, like finger rings, ear rings and ear dangles, necklaces, bracelets and cufflinks. You will also find body ornates like bioplast, belly button navel rings, ancle chains or rings, barbell tongue rings, belly Chains, nose rings, eyebrow rings, labrets, nipple rings, retainers, plugs and toe Rings.

jewelry made of robust materials - Jewelry made of extra rough and though noble metals, suited for people of action, like tungsten, zirconium, carbon fiber, titanium, wolfram, stailess steel or ceramic materials containing these elements like  tungsten carbide. You also find jewelry of these materials combined or combined with yellow gold, silver or diamonds. Especially many rough ornates for men.

Men's Accessories, money clips, cufflinks


Luxury Italian jewelry, apparel and decors of high artistic value - In this shop you find high class Italian made artworks to wear or carry with you like jewelry ornates, sharfs, belts, caps, hats, bags and shoes. You also find handcraft to decorate your home. There is a great inventory of murano glass artworks. You find artistic products both from worldwide recognized italian houses and from local artists of high quality.

FORZIERI.COM


A great diamond shop and a great shop of quality watches of fanous brands - many greatly discounted quality watches - This shop contains a huge collection of diamond jewelry of all shapes and fit for all occations. The shop also has a lot of jewelry with other types of gemstones. A huge inventory of engagement rings of all styles, with diamnonds, with colored gemstones or only of noble metal.

This shop is also great in quality watches for men and women and for all kind of use. There are of cource watches of noble mwtals and ornated with nobles stones, but you can also find watches for sport, diving, aviation outdoor life, work and other demanding settings. Among brands you can find here are Octavius, Rutland, Trench, ZM, DRYV, Fatdog,





A general store with a lot of jewelry and apparel, much body jewelry and a great inventory of watches for very law prices. - This is a general law price store with all kind of tecnology, apparel and tools for any use. If you look for body jewelry, this is one of the best places to find it.

Ongoing Promotion


A store for discounted electronics and software, including amart watches, digital watches and analog watches - In this store you can find all kind of electronic devices for discounted prices, including electronic wathes and watches with additinal functions like computing and GPS. You also find a lot of software and games here.

Priceplunge




Examples of the many jewelry pieces available. See further down for watches

Birth Stone Rings - 14k Gold Pink Tourmaline Birthstone Ring

Birth Stone Rings - 14k Gold Pink Tourmaline Birthstone Ring

Birth Stone Rings - 14k Gold Pink Tourmaline Birthstone Ring is available from jewelbasket.com for only $174.00. Buy now and save. Jewelbasket offers the best value on , jewelry and gifts.




10 Carat Jade Necklace In 18 Karat Gold Overlay, 18 Inches

10 Carat Jade Necklace In 18 Karat Gold Overlay, 18 Inches

This necklace features a 10 carat manmade jade gemstone in a pear shape. Each pendant measures about 1 inch. Pendant hangs on an 18 inch snake chain with lobster-claw clasp. Necklace is crafted in 18 karat yellow gold over brass.




Lady's Stainless Steel Zircon Navel Belly Button Ring Dancing Body Jewelry Piercing Body Jewelry

Lady's Stainless Steel Zircon Navel Belly Button Ring Dancing Body Jewelry Piercing Body Jewelry

Gender:Women; Material:Alloy; Style:Casual,Party; Jewelry Type:Navel Rings/Belly Piercing; Occasion:Casual; Material:Stainless Steel; Gender:Women; Body Jewelry Type:Navel Rings; Quantity:1set; Front Page:Jewelry




Fashion Stainless Steel Zircon Navel Belly Button Ring Dancing Body Jewelry Piercing Christmas Gifts

Fashion Stainless Steel Zircon Navel Belly Button Ring Dancing Body Jewelry Piercing Christmas Gifts

Jewelry Type:Navel Rings/Belly Piercing; Occasion:Daily,Christmas Gifts,Casual; Material:Stainless Steel; Quantity:1pc; Gender:Women; Front Page:Jewelry




Sunflower Stainless Steel Navel Ring

Sunflower Stainless Steel Navel Ring

Schmucktyp:Navel Bell Button Rings; Material:Aleacin; Material Farbe:Schwarz,Rosa,Lila,Wei




Florentine Jade Necklace

Florentine Jade Necklace

This necklace draws direct inspiration from jewels found in Florentine portraits created during that golden era.




Stackable Sterling Silver Eternity Ring with .5 Carats Pink Tourmaline

Stackable Sterling Silver Eternity Ring with .5 Carats Pink Tourmaline

Stackable Sterling Silver Eternity Ring with .5 Carats Pink Tourmaline is available from jewelbasket.com for only $114.00. Buy now and save. Jewelbasket offers the best value on , jewelry and gifts.




5100098 Swarovski Slake Rock Bracelet

5100098 Swarovski Slake Rock Bracelet

Features

  • The iconic Slake bracelet - with a rock twist! This design features a fascinating mix of crystals on purple Alcantara.
  • It wraps comfortably around your wrist for a twisted look.
  • The closure consists of two clear crystal buttons allowing you to adjust the size (36/38 cm).
  • Appr. Size - 14 1/8 in.




1 3/4ct Peridot and Diamond Ring in 14k White Gold. Fantastic Price!

1 3/4ct Peridot and Diamond Ring in 14k White Gold. Fantastic Price!

We have made a fabulous buy on gorgeous deep green peridot. This ring features a 1.65ct peridot set in a 14 karat white gold mounting, flanked by 14 diamonds of H/I color and I1 clarity.




PalmBeach Jewelry 51751 Genuine Brown Chalcedony Bangle Bracelet 8 1/2

PalmBeach Jewelry 51751 Genuine Brown Chalcedony Bangle Bracelet 8 1/2

Style with substance and staying power our brown chalcedony bangle bracelet is the kind of everlasting design you can count on for years to come. Slips on easily and goes with most anything. 22 mm width. 8 1/2" length.

Item Specifications: Bracelet

Metal Information

  • Height: 9.
  • Length: 8.5.
  • Width: 22.
  • Style: Bangle.
  • Clasp type: No Clasp.

    Stone Information

    Jade (Main/Largest Stone):

  • Quantity: 1.
  • Size (mm): 13.66.
  • Cut: Special.
  • Make: Genuine.
  • Setting: Wrapped.




  • CZ GB4534-RC Rock Candy' Rose 1-semiprecious Ovel shape Clear Quartz Rock Crystal stone Bangle

    CZ GB4534-RC Rock Candy' Rose 1-semiprecious Ovel shape Clear Quartz Rock Crystal stone Bangle

    Rock Candy Rose 1-semiprecious Ovel shape Clear Quartz Rock Crystal stone Bangle




    14kt. Amethyst Pendant

    14kt. Amethyst Pendant

    14kt. Amethyst Pendant is available from jewelbasket.com for only $150.00. Buy now and save. Jewelbasket offers the best value on , jewelry and gifts.




    .60ct Oval Ruby Pendant in 14k White Gold

    .60ct Oval Ruby Pendant in 14k White Gold

    .60ct oval ruby pendant crafted in 14k white gold. Comes with an 18 inch chain.


    Stylish 4 1/2ct Pink Topaz and Diamond Ring in 14k White Gold

    Stylish 4 1/2ct Pink Topaz and Diamond Ring in 14k White Gold

    You will not believe this ring when you see it. The intricate detail of millwork and diamond in hidden places accentuate this 14 karat white gold, 4 carat total gem weight pink topaz and diamond ring. Diamond content is 1/2 carat in I/J color and I1 clarity.




    4ct Blue Topaz and Diamond Ring in 10k White Gold

    4ct Blue Topaz and Diamond Ring in 10k White Gold

    10 karat white gold, 4 carat total gem weight blue topaz and diamond ring. Diamond content is 1/8 carat in I/J color and I2 clarity.




    Enormous Amethyst and Diamond Pendant in 14k White Gold

    Enormous Amethyst and Diamond Pendant in 14k White Gold

    Featuring a huge 6ct Amethyst and over 100 diamonds, each individually hand set for maximum security, this is one statement piece of jewelry. A total of 6.40cts of diamonds and amethyst. SuperJeweler's nice diamond quality, I/J in color, I2 in clarity, and an enormous vibrant amethyst. You cannot imagine what a showpiece this is in 14k white gold. It even comes with a complementary 18-inch chain.




    1ct Overlapping Bezel Diamond Eternity Band in 14k YG, GH SI, 4-9.5

    1ct Overlapping Bezel Diamond Eternity Band in 14k YG, GH SI, 4-9.5

    The Overlapping bezel set diamond eternity band in 1 carat total diamond weight crafted in 14 karat yellow gold. Our finest superjeweler diamond quality, G/H in color, SI1+ in clarity. SuperJeweler eternity bands are available in ring sizes 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, and 9.5 to suit your individual size.




    2ct Halo Diamond Engagement Ring Crafted in 14 Karat Rose Gold

    2ct Halo Diamond Engagement Ring Crafted in 14 Karat Rose Gold

    For a classically beautiful diamond engagement ring, try this engagement ring crafted in 14 karat rose gold. This over the top ring boasts a .75 carat center surrounded by a halo of diamonds, and accented with an additional artistic border of shimmering diamonds. The ring has a total diamond weight of 2.01 carats. There are 129 diamonds total in I/J color and I1/I2 clarity. The ring is crafted in solid 14 karat white gold and is available in ring sizes 4-9.




    Dlux Jewels Olive Jade & Smoky Semi Precious Faceted Stones Gold Plated Sterling Silver Chain Bracelet 7.5 x 1 in.

    Dlux Jewels Olive Jade & Smoky Semi Precious Faceted Stones Gold Plated Sterling Silver Chain Bracelet 7.5 x 1 in.

    Deluxe Fashion’s fine jewelry experts regularly scour the globe for the latest styles and trends resulting in fashion-forward collections that customers love. Women's fashion trends are continuously evolving and charm elegance and individuality are important aspects that customers consider before finalizing a purchase. Providing customers with jewelry that intertwines versatile trends distinctive style and unparalleled originality makes Deluxe Fashion the leaders in the industry.

    Features
    • Olive Jade & Smoky Semi Precious Faceted Stones Gold Plated Sterling Silver Chain Bracelet
    Specifications
    • Color: Olive Jade & Smoky




    PalmBeach Jewelry 51747 Genuine Green Agate Bangle Bracelet 8 1/2

    PalmBeach Jewelry 51747 Genuine Green Agate Bangle Bracelet 8 1/2

    Style with substance and staying power our green Agate bangle bracelet is the kind of everlasting design you can count on for years to come. Slips on easily and goes with most anything. 22 mm width. 8 1/2" length. As this item contains genuine jade the actual stone colors may vary slightly.

    Item Specifications: Bracelet

    Metal Information

  • Height: 9.
  • Length: 8.5.
  • Width: 22.
  • Style: Bangle.
  • Clasp type: No Clasp.

    Stone Information

    Jade (Main/Largest Stone):

  • Quantity: 1.
  • Size (mm): 22.
  • Cut: Special.
  • Make: Genuine.
  • Setting: Wrapped.




  • Amethyst Mouse Pendant in 10k White Gold

    Amethyst Mouse Pendant in 10k White Gold

    Like cute little critters? Check out this white gold, 2ct amethyst mouse pendant. Crafted in white gold and dangling from an 18 inch chain.




    Titanium 7MM Wheat Link Bracelet

    Titanium 7MM Wheat Link Bracelet

    A felxible bracelet made of titanium, among the strongest noble metals that exist.




    Tungsten Carbide Maple Wood Wedding Band Ring

    Tungsten Carbide Maple Wood Wedding Band Ring

    A beautiful and robust ring made of a super-strong noble ceramic metverdana.





    Waches for favourable prices

    2

    Timex T2N533 Premium Originals Sportster White Dial White Band Casual Watch

    Timex T2N533 Premium Originals Sportster White Dial White Band Casual Watch

    The Timex T2N533 Premium Originals Sportster Watch is the perfect mix of style and utility. Featuring a silver-tone aluminum case, white dial, and white silicone strap, this watch combines function and fashion to create the ideal accessory whether you're in the office or out on the town. The Timex T2N533 Premium Originals Sportster Watch also features a uni-directional rotating silver-tone bezel, Indiglo Night-Light for easy readability in the dark, scratch-resistant mineral crystal, and a date display.




    Octavia Ladies Hoot Watch - Black

    Octavia Ladies Hoot Watch - Black

    Movement: Japanese Power Precision , Case Composition: Industrial Grade Composite Alloy , Case Size: 40 MM , Case Color: Layered Rose Gold , Face: White With Golden Owl Dial, Jeweled Hour Indicators , Bezel: None , Band Composition: Industrial Composite Leather , Band Color: Noir Black, Water-Resistant Up To 1 ATM , Imported




    Octavia Women's Giselle Watch

    Octavia Women's Giselle Watch

    Movement: Japanese Power Precision , Case Composition: Industrial Grade Composite Alloy , Case Size: 40 MM , Case Color: Layered Rose Gold , Face: Arctic White Dial, Golden Numerical Hour Indicators , Bezel: High Polish , Band Composition: High Density, Eco-Friendly Silicon, Anaconda Embroidery , Band Color: Red , Water-Resistant Up To 1 ATM , Imported




    Octavia Women's Night Racer Classic Watch

    Octavia Women's Night Racer Classic Watch

    Movement: Japanese Power Precision , Case Composition: Industrial Grade Composite Alloy , Case Size: 38 MM , Case Color: Laboratory Gilded Rose Gold , Face: Black , Bezel: Black , Band Composition: High Density, Eco-Friendly Silicon, Band Color: Black , Water-Resistant Up To 1 ATM , Imported




    Octavia Ladies Macha Watch - Red

    Octavia Ladies Macha Watch - Red

    Movement: Japanese Power Precision , Case Composition: Industrial Grade Composite Alloy , Case Size: 40 MM , Case Color: Layered Rose Gold , Face: Bright Red Dial, Golden Numerical Hour Indicators , Bezel: Numbered Turning Timer , Band Composition: Industrial Composed Silicone , Band Color: Bright Red , Water-Resistant Up To 1 ATM , Imported




    Octavia Women's Toscana Watch - Turquoise

    Octavia Women's Toscana Watch - Turquoise

    Movement: Japanese Power Precision , Case Composition: Industrial Grade Composite Alloy , Case Size: 36 MM , Case Color: Layered Rose Gold , Face: Turquoise Fashion Chronograph With Gold Hour Markers , Bezel: High Polish , Band Composition: Industrial Composite Leather, Band Color: Turquoise , Water-Resistant Up To 1 ATM , Imported




    Magellan Echo Smart Watch - Wrist - Stopwatch, Music Player - 1

    Magellan Echo Smart Watch - Wrist - Stopwatch, Music Player - 1" - 128 x 128 - Bluetooth - Bluetooth 4.0 - 8035.33 Hour - Blue - Sports, Health & Fitness - Water Resistant

    ECHO BLUE




    Samsung SM-R732 Gear S2 Classic Smart Watch - Rose Gold

    Samsung SM-R732 Gear S2 Classic Smart Watch - Rose Gold

    Gear S2 Classic Rose Gold




    Casio GWM500A-1 G-Shock Men's Solar Atomic Digital Sports Watch

    Casio GWM500A-1 G-Shock Men's Solar Atomic Digital Sports Watch

    Casio G Shock Watch Solar Atom




    Magellan Echo Smart Watch - Wrist - Stopwatch, Music Player - 1

    Magellan Echo Smart Watch - Wrist - Stopwatch, Music Player - 1" - 128 x 128 - Bluetooth - Bluetooth 4.0 - 8035.33 Hour - Blue - Sports, Health & Fitness - Water Resistant

    ECHO BLUE




    Casio SGW400H-1BV Twin Sensor Sports Wrist Watch

    Casio SGW400H-1BV Twin Sensor Sports Wrist Watch

    Twin Sensor Men Altimeter Watc




    Casio LA11WB-1 Wrist Watch - Women - Casual - Digital - Quartz

    Casio LA11WB-1 Wrist Watch - Women - Casual - Digital - Quartz

    Water Resistant Watch




    Casio G-Shock Men's Watch - Black

    Casio G-Shock Men's Watch - Black

    G-Shock Men's Watch Black




    Casio Men's Analog Sport Watch 200M WR

    Casio Men's Analog Sport Watch 200M WR

    Analog Sport Watch 200M WR




    Tomtom Golfer GPS Watch - White/Green

    Tomtom Golfer GPS Watch - White/Green

    Golfer GPS Watch wht/grn




    Casio SGW100-1V Wrist Watch - Sports

    Casio SGW100-1V Wrist Watch - Sports

    Casio Twin Sensor Watch




    HD Watch 1080P Black

    HD Watch 1080P Black

    This spy watch DVR looks and functions like a normal wristwatch, but it actually records HD 1280 x 960 resolution video from a hidden lens. This stylish waterproof watch features a pinhole lens that captures video or snaps pictures with the touch of a button. To view your footage, simply plug a USB cable into the watch's discreet USB port and review everything on a computer quickly and easily. Why the HD Waterproof Spy Watch? Rugged and waterproof go anywhere design 3-in-1 design records video, audio, and takes photos The quintessential piece of spy gear This spy watch also doubles as a voice recorder; great for any personal notes you need to record on the go. It can even be used as a flash drive. You'll never lose your files when you wear them on your wrist.





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    Information aboutbout noble metals

    Properties and definitions about gemstones - down on this page

    Chemistry and physics of gemstones

    About the minerals and gemstones in the quarts group

    Gemstones in the corundum group - rubines and saphires

    Beryl group gemstones, garnets, topaz

    What characterizes dive watche

    Tourmaline group gemstones

    Lapiz lazul

    How does gemstones get their colours

    About perls and nacre




    What is a gemstone - properties of gemstones

    Properties of the stone material - physical and chemical properties

    A gemstone can be a mineral, that is a crystaline piece where the whole piece have the same basic chemical composition in its crystal lattice. It can also also be a rock art. A rock art contains crystals of different types of lattice composition. In some rare instances also amorphous or glassy substances are used as gemstones. An example is the glassy substanses Opal and Obsidian, and the amorphous substance Ember.

    The tern "gemstone" does not have any clear definition. Neither has the term "jewel" used about precious gemstone any clear definition. Here are listed some properties that can make a stone to a gemstone.

    Beauty: A gemstone must be beautiful. But beauty consists of several sub-properties. In the following these are listed.

    Colour beauty: A pleasant colour is a requirement for a gemstone. A clean clearness as for example in a perfect rock crystal or a clean blackness as for example in a black onyx is also special instances of colour beauty. Either the stone must have a uniform clean colour, or nice shadings of different colours. The colour can be a property of the stone material. It can originate from dissolved chemicals or atoms in the crystal lattice. It can originate from refraction of light within the crystal, as for example in a clear diamant. It can also have its origine in microscopic inclusion of other minerals in a crystal.

    Colour play or dispersion: The colour of a stone should not be dead or inert. It should sift somewhat and show to be alive according to the type and strength of light falling upon the stone, and according to the angle of the light. Colour play has its oriogin in light refraction in the whole stone or in layers within the stone. Flourescence may also contribute to a beautiful colour play, but can also sometimes destroy the beauty of a stone. Fluorence is the ability to send back light of another colour than that sent into the stone. Colour play depend very much upon the way a gemstone is cut. For example is a diamond cut to maximize the colour play.

    Light play or Brilliance: This is internal or external reflexes from a stone that changes all the time as the angle of light upon the stone or the angle of seeing the stone from are changed. The brilliance can look like thousands of sparcles emanating form the stone all the time. Light play depend very much upon the way a gemstone is cut. For example is a diamond cut to maximize the brilliance.

    Purity: A gemstone must be free from ugly inclusions or spots of foreign elements that do not add to the beauty of the stone. It must also be free from dissolved substances that shades for the colour or colour play. An area with many small inclusions of impurities in a stone is often called a cloud. However, inclusions or spots can somentimes also increase the beauty of the stone, for example if the inclusions have fine colours, add colour play or reflect light to increase the brilliance.

    Claearness: Clearness is the degree with which a stone is distorting an image seen through the stone. Clearness can be a quality that makes a stone into a gemstone. However, if a stone is unclear in such a way that seeing through the stone gives the impression of a nicely coloured or shaded mist, also this can make a stone to a gemstone.

    Robustness: In order to be used as a gemstone, the piece must be enough robust against mechanical impacts, chemical ingredients, temperature or other physical infuences. Robustness consist of several sub-properties:

    Hardness: Hardness is a measure of the strongest force a stone can withhold without bursting, and is perhaps the most important property that makes a stone robust. Hardness is measured with a logaritmic scale from 0-10. That means in fact that a stone of hardness 7 is 10 times harder than a stone of hardness 6. Diamonds are one of the hardest substances found, with the hardness of 10 on the scale.

    Rareness: A beautyful stone is liker to be regarded as a gemstone if it is rare. Looking at something rare that gives you another experience than all the usual things sou see around you, stimulate the senses and feelings more that looking at any familiar object. However, a stone need not be extremely rare to give this kind of experience.

    Symmetry: The colour play, brilliance, clearity or other properties should usually be uniform througout the stone, or show a symmetry according to an axis or point.


    Properties related to the way the stone has been crafted

    Here are listed some other properties that are used to characterize agemtsones, and especially diamonds.

    Crown: This is the top part of the diamond above the girdle.

    Cut: Cut refers to the arrangement of a diamond's facets. A diamond which is "ideal cut" captures and reflects back from the interior of the stone the maximum play of light. This is not the same as the shape of a diamond.

    Cutlet: This is the bottom facet of a diamond, usually very small. If itoo large, when you look it will look like the diamond has a hole in the middle, straight down through the table.

    Eye-Clean: Refers to a diamond that has no inclusions or blemishes visible to the naked eye.

    Facet: A polished surface on a diamond. A round, full-cut diamond usually has 58 facets, 33 on the crown and 25 on the pavilion.

    Fire: Rainbow colors resulting from the dispersion of light.

    Flawless: Diamond without external or internal blemishes or inclusions seen under 10X magnification are calld flawless.

    Fluorescence: A diamond will absorbe energy from ultraviolet (UV) light, causing the stone to glow this energy out egain as visible light in various colors.

    Full-Cut: A diamond with 58 or more facets.

    Gemologist: A person who has been trained and certified in diamonds and colored stones.

    Girdle: This is the circumference of a diamond which is usually held by prongs of a setting and separates the crown and pavilion. The purpose of the girdle is to protect the edge of the stone from chipping.

    Head: The prongs which hold a diamond in its setting.

    Karat: This is another thing than carat-weight of a diamond. This is the measure of the purity of gold; 24-karat being pure gold. Jewelry is made from 18K and 14K gold, and contains other metals for strength.

    Laser-Drilled: Treated with a laser to remove carbon spots.

    Light Return: The light that is returned from the diamond and not leaked through the pavilion (bottom) of the diamond.

    Loupe: A small magnifying glass used to view gemstones.

    Off-Make: An ill-proportioned diamond.

    Pav: A method of setting diamonds very closely together, giving the illusion of one or more larger diamonds.

    Pavilion: The bottom part of the diamond below the girdle. It has an ideal angle of 40.75 degrees. The pavillion acts as a very highly polished and precise mirror that throws the light back through the other facets.

    Point: One-hundredth of a carat.

    Refraction: Refraction refers to the bending and slowing of light passing at an oblique angle from the medium of one optical density (such as air) into a medium of greater optical density (such as a diamond). The refraction on passing of the light from air into the diamond and from the diamond back into the air creates the fire of a diamond, because the various colors of the white light are refracted to various degrees and thus separated from each other.

    Semi-Mount: A setting which is complete except for the main stone, which will be selected separately.

    Shape: This is not the same as cut, shape means the geometric for of the stone. Popular shapes include the round brilliant, marquise, emerald cut, pear and oval.

    Single-Cut: A diamond with only 16 or 17 facets.

    Sparkle: Flashing effect produced when a diamond is moved in the light.

    Symmetry: The symmetry is the quality of efficient light reflection and return. It is a function of proper attention to cutting angles.

    Table: This is the largest and most important facet in a diamond situated at the top.

    Tiffany: A simple, elegant 2-3 mm ring setting with a head with prongs that holds a single diamond.

    Transparency and opaqueness: A stone that let through all the light that comes onto it, is totally transparant. If no light is let through, the stone is opaque.