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Top color Natural Opal Gemstone
- 存貨單位
- OP 04
- 尺寸(毫米)
- 11.750 x 9.390 x 4.480mm
- 重量 (cts)
- 1.950
- 類型
- Faceted
- Shape
- Oval
- 顏色
-
combine shipment period is only 3 days from first purchase if a buyer not pay items will be canceled after 3 days .
Gemstone : Natural Opal
Treatment: Not Heated. Not Treated. Not Enhanced.
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.
The name opal is believed to be derived from the Sanskrit word upala (उपल), which means 'jewel', and later the Greek derivative opállios (ὀπάλλιος), which means 'to see a change in color'.
There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence); common opal does not.[5] 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."[6] 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 the rarest, while white, gray, and green opals are the most common.
- 存貨單位
- OP 04
- 尺寸(毫米)
- 11.750 x 9.390 x 4.480 mm
- 重量 (cts)
- 1.950
- 類型
- Faceted
- Shape
- Oval
- 顏色
-
combine shipment period is only 3 days from first purchase if a buyer not pay items will be canceled after 3 days .
Gemstone : Natural Opal
Treatment: Not Heated. Not Treated. Not Enhanced.
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.
The name opal is believed to be derived from the Sanskrit word upala (उपल), which means 'jewel', and later the Greek derivative opállios (ὀπάλλιος), which means 'to see a change in color'.
There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence); common opal does not.[5] 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."[6] 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 the rarest, while white, gray, and green opals are the most common.
運輸商 | 運送至:國家 | 運送到世界其他地區 |
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Standard Shipping - Tracked | $10.00 / :幾天天 | $14.00 / :幾天天 |
:國家
Standard Shipping - Tracked 對包含 2 或更多商品的訂單折扣為 $15.00
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 | $35.00 / :幾天天 | $35.00 / :幾天天 |
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $40.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $40.00
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積極的
Beautiful Gemstone, everything is 100% ok
為什麼用戶出價高於自己?
出價時,這是用戶願意為產品出價的最高金額。然後,我們的系統將代表該用戶自動出價,逐步提高出價以保持其作為最高出價者的地位,直至達到指定的最高價。
當出現“自動出價”圖標時,表示我們的系統正在根據用戶的最高出價主動為用戶出價。這可能看起來好像用戶出價高於自己,但這只是系統更新出價以反映用戶最高限額的結果。