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Sterling Silver Blue Chalcedony and Diamond Heart Pendant, (0.03 cttw, H-I Color, I3 Clarity), 18" Sale Price: $53.00 You save: $78.99 (60%)  |
Chalcedony Diamond
 AUTHENTIC DAVID YURMAN AQUA CHALCEDONY AND DIAMOND PETITE WHEATON RING WOW US $280.00 
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 RARE CARTIER 18kWG HEMATITE DIAMOND MULTI GEM NECKLACE RUBY SAPPHIRE CHALCEDONY US $14,950.00
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 SEIDEN GANG 18K YG CHALCEDONY DIAMOND BRACELET US $3,850.00
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 Hammerman Brothers Chalcedony Diamond Ring 18K White Gold 36gr over 1 ounce HUGE US $2,995.00
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 VAN CLEEF ARPELS 18K CHALCEDONY DIAMOND PENDANT PIN US $4,400.00
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 DAVID YURMAN Chalcedony DIAMOND EARRINGS US $1,579.00
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 DAVID YURMAN CHALCEDONY PAVE DIAMONDS CUFF LINKS US $1,249.00
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 David Yurman SS 18K 10mm Large Chalcedony Diamond Bracelet RARE GORGEOUS $6400 US $2,650.00
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 RARE AUTHENTIC CARTIER 18K YELLOW GOLD DIAMOND GREEN CHALCEDONY PINK CORAL RING US $6,500.00
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 DAVID YURMAN SS 18K CHALCEDONY DIAMOND PENDANT US $1,150.00
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 DAVID YURMAN CHANDELIER EARRING STERLING SILVER 925 DIAMOND CHALCEDONY US $749.95
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 Carol Brodie Aqua Blue Chalcedony Diamond Sterling Ring size 6 US $79.99
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 DAVID YURMAN Chalcedony 1200ct Diamond50ct 18k Sterling Earrings GAL APPRAISAL US $1,725.00
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 Signature Lagos Caviar Diamond Chalcedony Sapphire Ring In 18K Gold size 7 Nice US $1,395.00
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 IPPOLITA Silver Scultura Cushion Snowman Blue Chalcedony Diamond Earrings NWT US $1,290.00
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 David Yurman Chalcedony Quatrefoil Diamonds Bracelet US $625.00
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 New DAVID YURMAN Split Shank Albion Aqua Chalcedony Diamond Ring Size 8 $1550 US $1,199.99
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 DAVID YURMAN STERLING DIAMONDS CHALCEDONY RING US $1,025.00
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 DAVID YURMAN Blue Chalcedony Diamond Ring Albion 15x15mm 75 $1650 US $1,299.99
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 Charles Krypell Designer Blue Chalcedony Diamond Ring US $858.00
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 David Yurman Chalcedony Silver 18K Gold Diamond Double Cable Bracelet US $1,325.00
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 David Yurman Silver 18K Diamond Chalcedony Blue Pendant Enhancer US $899.00
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 AMAZING RARE HENRY DUNAY 18k GOLD SAPPHIRE DIAMOND CHALCEDONY RING US $3,230.00
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 Laura Ramsey 14K Solid White Gold 13ct Blue Chalcedony 010ct Diamond Ring Sz 6 US $599.99
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 $2150 Charles Krypell Silver 18K Gold Diamond Chalcedony Carnelian Necklace NWT US $825.55
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 GORGEOUS Sterling Silver DAVID YURMAN Diamond Chalcedony 5mm Cable Bracelet US $895.00
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 David Yurman Chalcedony Diamond 18K Earrings US $1,500.00
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 BEAUTIFUL ESTATE 18K DIAMOND CHALCEDONY EARRINGS US $1,500.00
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 SALE LAST CHANCE Judith Ripka Sea Blue Chalcedony Diamond Pendant Retail $800 US $299.99
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 14K WG 200 CT DIAMOND BLUE CHALCEDONY EARRINGS VS2 F US $1,995.00
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 CHIMENTO Earrings Elegance in gold 18k with Diamonds and Chalcedony w origBox US $1,349.00
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 David Yurman 14MM Blue Chalcedony Diamond Earrings US $899.00
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 David Yurman Chalcedony Diamonds Bracelet US $729.00
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 David Yurman Aqua Chalcedony Diamond Wheaton Ring US $599.00
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 Designer Signed Jewelry Sonia B Bitton 14K Gold Gray Chalcedony Diamond Ring US $879.00
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 Designer Signed Jewelry Sonia B Bitton 14K Gold Chalcedony Diamond Ring sz8 US $879.00
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 Designer Signed Jewelry Sonia B Bitton 14K Gold Chalcedony Diamond Ring sz6 US $879.00
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 David Yurman 14MM Chalcedony Diamonds Link Bracelet US $799.00
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 David Yurman SS 18K Diamond Chalcedony Necklace 344 Grams US $1,250.00
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 DAVID YURMAN Sterling 14K Double 5MM Chalcedony Diamonds Cable Bracelet US $1,449.99
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 David Yurman 18K SS Chalcedony Diamonds Quatrefoil Pendant US $995.00
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 STUNNING DAVID YURMAN PAVE DIAMOND 18k WHITE GOLD CHALCEDONY BANGLE BRACELET US $1,300.00
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 David Yurman 18K Gold Pave Diamond Quatrefoil Green Chalcedony Earrings US $2,044.50
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 David Yurman 18K WG Chalcedony Diamond Pendant US $1,299.00
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 David Yurman Quatrefoil Ring Chalcedony w Pave Diamonds SIZE 7 US $660.00
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Gemstone Treatments and Enhancements
Though stone treatment has gone on for centuries, new techniques and methods are now available and many of today’s gemstones are treated to improve their appearance and make them more marketable. While it is common knowledge within the gem trade that stones are enhanced through treatment, the buying public has known little about the treatments until recently.
As long as the consumer realizes that the stone has been treated, and the value adjusted accordingly, this is not a deceptive or underhanded practice. Treatments can do such things as change or enhance color, make the stone more durable and enhance the character of the stone. Unless the stone is stated to be natural, we can almost always assume that the stone has been treated with the common treatments used on that type of gemstone. Natural precious stones with no treatment at all are a rarity and very expensive.
Treatment maybe as simple as the old treatment of soaking chalcedony in honey then ageing it on the roof of the house so the honey caramelized and changed the color. When the stone turned black, it was called Black Onyx. Gemstones can be treated with heat, laser treatment, radiation, bleaching, stabilization, putting in acid, applying pressure, oiling, impregnation, dyeing, or combinations of any of these techniques. Here are just a few examples of common stone treatments:
1. Chalcedony is treated with heat to become Carnelian, and when it is dyed black, we call it Black Onyx.
2. Aquamarine is sometimes heated at a low temperature to bring out the blues and lessen the naturally occurring yellows, which make greens appear in the stone.
3. Rubies are rarely available these days that have not been heat treated, but if you can find natural rubies, the value is at least 30% better than that of a treated stone.
4. Diamonds in colors have become quite popular. Many of these are treated with radiation or a combination of pressure and heat. Naturally colored diamonds are far more valuable than their treated counterparts.
5. Emeralds can be treated with oil or impregnated with polymers, even dyed polymers to enhance color.
6. Tanzanite is naturally brown and when it is treated with heat the characteristic blue with violet undertones becomes apparent.
7. Sapphires are sometimes heat treated at a high temperature to bring out the dark blues and enhance the clarity of the stones.
8. The Padparadscha Sapphire is most often treated with heat to enhance the brilliance of the color.
9. Pearls have been bleached, waxed, heated, dyed and irradiated to enhance their color and luster.
10. Citrine is frequently heat-treated amethyst or smoky quarts. Natural citrine is usually a light yellow.
11. Topaz is often irradiated or heated to bring out the brilliant blues. It is also sometimes sliced and layered by color to give an almost iridescent color. This topaz is usually called Mystic Topaz.
12. Turquoise can be dyed, stabilized, have the matrix enhanced and even backed with plastic when it is mounted.
If the price of any of these stones seems too good to be true, you are probably looking at a treated stone. If no deception is practiced and the buyer and seller are both happy with the transaction gemstone treatment is not an unethical or deceptive practice.
About the Author
Copyright 2007 Louise Coulson
You may reprint this article as long as you leave all of the links active. Do not edit the article in any way. Give the author credit.
About the Author
Louise Coulson is a jewelry artisan who works with Kingfisher Designs. She is webmaster for both http://www.wireweavers.com and http://www.jewelryspectrum.com