TANZANITE STONE 0.31 CTS [S2238 ]
- SKU
- 寸法(mm)
- 5.103 x 3.5 x 2.7mm
- 重さ (CT)
- 0.31
- Treatment
- Heat Treatment
- Type
- Faceted
- 色
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TANZANITE
Well cut stone ready to be set in jewellery
Mohs scale 6.5 to 7
Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide -Tanzair africa. Its blue, surrounded by a fine hint of purple, is a wonderful colour. Thanks to its unusual aura and the help of the New York jeweller's Tiffany, it has rapidly become one of the most coveted gemstones in the world.
Tanzanite is a blue variety of the gemstone zoisite. It consists of calcium aluminium silicate and is not particularly hard, having a value of 6.5 to 7 on the Mohs scale. For that reason, it should always be worn carefully and never placed in an ultrasonic bath for cleaning or brought into contact with acids.
The deep blue of the tanzanite is fantastic, and runs from ultramarine blue to light violet-blue. The most coveted colour is a blue surrounded by a delicate hint of purple, which has a particularly wonderful effect in sizes of over 10 carats. The well developed polychromaticity of the tanzanite is typical: depending on the angle from which you look at it, the stone may appear blue, purple or brownish-yellow. Having said that, most raw crystals are somewhat spoiled by a brownish-yellow component, though it can be made to disappear by the cutter if he heats the stone carefully in an oven to approximately 500°. During the procedure he must pay careful attention to the moment at which the colour turns to blue. This burning is a method of treatment which is regarded as customary in the trade, but the raw stones must be as free of inclusions as possible, since otherwise fissures may occur. In fact working with tanzanite can sometimes give even the most experienced cutter a bit of a headache, the cleavage of this gemstone being very pronounced in one direction. This exclusive gemstone is cut in every imaginable shape from the classical round shape to a number of imaginative designer cuts.
| 配送業者 | 配送先オーストラリア | その他の国への配送 | 同梱配送 ( オーストラリア ) | 同梱配送(その他の地域) |
|---|---|---|---|---|
| FedEx |
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| Registered Shipping |
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- SKU
- 寸法(mm)
- 5.103 x 3.5 x 2.7 mm
- 重さ (CT)
- 0.31
- Treatment
- Heat Treatment
- Type
- Faceted
- 色
-
TANZANITE
Well cut stone ready to be set in jewellery
Mohs scale 6.5 to 7
Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide -Tanzair africa. Its blue, surrounded by a fine hint of purple, is a wonderful colour. Thanks to its unusual aura and the help of the New York jeweller's Tiffany, it has rapidly become one of the most coveted gemstones in the world.
Tanzanite is a blue variety of the gemstone zoisite. It consists of calcium aluminium silicate and is not particularly hard, having a value of 6.5 to 7 on the Mohs scale. For that reason, it should always be worn carefully and never placed in an ultrasonic bath for cleaning or brought into contact with acids.
The deep blue of the tanzanite is fantastic, and runs from ultramarine blue to light violet-blue. The most coveted colour is a blue surrounded by a delicate hint of purple, which has a particularly wonderful effect in sizes of over 10 carats. The well developed polychromaticity of the tanzanite is typical: depending on the angle from which you look at it, the stone may appear blue, purple or brownish-yellow. Having said that, most raw crystals are somewhat spoiled by a brownish-yellow component, though it can be made to disappear by the cutter if he heats the stone carefully in an oven to approximately 500°. During the procedure he must pay careful attention to the moment at which the colour turns to blue. This burning is a method of treatment which is regarded as customary in the trade, but the raw stones must be as free of inclusions as possible, since otherwise fissures may occur. In fact working with tanzanite can sometimes give even the most experienced cutter a bit of a headache, the cleavage of this gemstone being very pronounced in one direction. This exclusive gemstone is cut in every imaginable shape from the classical round shape to a number of imaginative designer cuts.
| 配送業者 | 配送先オーストラリア | その他の国への配送 | 同梱配送 ( オーストラリア ) | 同梱配送(その他の地域) |
|---|---|---|---|---|
| FedEx |
|
|
|
|
| Registered Shipping |
|
|
|
|
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ポジティブEverything was Awesome! Thank you so much for everything! It's always an absolute pleasure buying from you, and will be doing it again soon. Take care and all the best for the new year!
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ポジティブThe Pendant is fantastic!
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ポジティブAbsolutely smashing books, the opals are magnificent! Thank you so much for everything, will be buying from you again soon. Thank you, again!
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ポジティブThe Pendant is breathtaking! Thanks!
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ポジティブThe Pendant is stunning!
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正確な写真
Comments
After thorough evaluation of the Verified seller's information provided, Gem Rock Auctions has found accurate and honest pictures and details for this listing. Gem Rock Auctions is committed to holding our sellers to the highest standards of integrity and transparency. As part of this policy, we only permit the sale of natural, earth mined, gemstones. Manmade, synthetic, and imitation gemstones are not permitted on Gem Rock auctions. Many Gemstones have received treatments to enhance their color and/or clarity to further emphasize their beauty and we insist treatments are disclosed. Unless accompanied by a report from an approved laboratory, all origins or treatments declared in the listing are the sellers' opinion. There are limitations to what can be determined without physically handling the listed item.