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6.10 Carats Full Fire Opal Cabochon
- 存貨單位
- 尺寸(毫米)
- 18.000 x 10.000 x 9.000mm
- 重量 (cts)
- 6.100
- Treatment
- No Treatment
- 顏色
-
Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt.
There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence), common opal does not.[4] Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light."[5] The internal structure of precious opal causes it to diffract light, resulting in play-of-color. Depending on the conditions in which it formed, opal may be transparent, translucent, or opaque and the background color may be white, black, or nearly any color of the visual spectrum. Black opal is considered to be the rarest, whereas white, gray, and green are the most common.
Opal Cab
Paypal Accepted
- 存貨單位
- 尺寸(毫米)
- 18.000 x 10.000 x 9.000 mm
- 重量 (cts)
- 6.100
- Treatment
- No Treatment
- 顏色
-
Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt.
There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence), common opal does not.[4] Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light."[5] The internal structure of precious opal causes it to diffract light, resulting in play-of-color. Depending on the conditions in which it formed, opal may be transparent, translucent, or opaque and the background color may be white, black, or nearly any color of the visual spectrum. Black opal is considered to be the rarest, whereas white, gray, and green are the most common.
Opal Cab
Paypal Accepted
運輸商 | 運送至:國家 | 運送到世界其他地區 |
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Standard Shipping - Tracked | $20.00 / :幾天天 | $20.00 / :幾天天 |
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Standard Shipping - Tracked 對包含 2 或更多商品的訂單折扣為 $20.00
世界其他地區
Standard Shipping - Tracked 對包含 2 或更多商品的訂單折扣為 $20.00
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FedEx | $45.00 / :幾天天 | $45.00 / :幾天天 |
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $45.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $45.00
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DHL | $60.00 / :幾天天 | $60.00 / :幾天天 |
:國家
DHL 對包含 2 或更多商品的訂單折扣為 $60.00
世界其他地區
DHL 對包含 2 或更多商品的訂單折扣為 $60.00
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days