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01/10/2011 04:50 am
PARCEL OF 25 NATURAL RUBY...171 cts
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細節
- 存貨單位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- Certified Gemstones
- 不
- 顏色
-
描述
IMPORTANT NOTE: This item contains fissure filled cavities that may contain glass, cobalt, or other materials. Due to the presence of these materials, this item should be referred to as a composite stone.
The process of fracture filling ruby with transparent lead glass is a recent innovation that began about 2004 in Chanthaburi, Thailand. Rubies of good color, primarily from Madagascar, that are disfigured by fissures or surface cracks can be "repaired" using heat treatment with lead glass. The refractive index of corundum and lead glass are very similar, allowing light to travel through the stone, improving the color and clarity. These rubies are often found in large sizes at a fraction of the cost of untreated ruby of similar color. So they represent an excellent value in the market, so long as the treatment is disclosed and the price is appropriate. The Asian Institute of Gemology tested fractured filled rubies for durability and found them to be more durable than a typical emerald fracture-filled with oil or resin. AIGS advised against excessive heating with a jeweler's torch, but found no negative effects from cleaning with detergents or ultrasonic devices. They advise that hydrofluoric acid should not be used on these gems, and that any recutting or repolishing should be performed with care.(article by courtesy of Gemselect from chanthaburi,Thailand)
This is a big parcel of 25 natural ruby from the mines of ORISSA, India...171 cts and sizes between 21X15mm and 7X9mm...clarity opaque...Heat/filled.......For explanation of filled ruby
The process of fracture filling ruby with transparent lead glass is a recent innovation that began about 2004 in Chanthaburi, Thailand. Rubies of good color, primarily from Madagascar, that are disfigured by fissures or surface cracks can be "repaired" using heat treatment with lead glass. The refractive index of corundum and lead glass are very similar, allowing light to travel through the stone, improving the color and clarity. These rubies are often found in large sizes at a fraction of the cost of untreated ruby of similar color. So they represent an excellent value in the market, so long as the treatment is disclosed and the price is appropriate. The Asian Institute of Gemology tested fractured filled rubies for durability and found them to be more durable than a typical emerald fracture-filled with oil or resin. AIGS advised against excessive heating with a jeweler's torch, but found no negative effects from cleaning with detergents or ultrasonic devices. They advise that hydrofluoric acid should not be used on these gems, and that any recutting or repolishing should be performed with care.(article by courtesy of Gemselect from chanthaburi,Thailand)
船運
| 運輸商 | 運送至：國家 | 運送到世界其他地區 | 聯合運輸（ 法國 ） | 聯合運輸（世界其他地區） |
|---|---|---|---|---|
| Standard Shipping - Tracked |
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| Registered Shipping |
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細節
- 存貨單位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- Certified Gemstones
- 不
- 顏色
-
描述
IMPORTANT NOTE: This item contains fissure filled cavities that may contain glass, cobalt, or other materials. Due to the presence of these materials, this item should be referred to as a composite stone.
The process of fracture filling ruby with transparent lead glass is a recent innovation that began about 2004 in Chanthaburi, Thailand. Rubies of good color, primarily from Madagascar, that are disfigured by fissures or surface cracks can be "repaired" using heat treatment with lead glass. The refractive index of corundum and lead glass are very similar, allowing light to travel through the stone, improving the color and clarity. These rubies are often found in large sizes at a fraction of the cost of untreated ruby of similar color. So they represent an excellent value in the market, so long as the treatment is disclosed and the price is appropriate. The Asian Institute of Gemology tested fractured filled rubies for durability and found them to be more durable than a typical emerald fracture-filled with oil or resin. AIGS advised against excessive heating with a jeweler's torch, but found no negative effects from cleaning with detergents or ultrasonic devices. They advise that hydrofluoric acid should not be used on these gems, and that any recutting or repolishing should be performed with care.(article by courtesy of Gemselect from chanthaburi,Thailand)
This is a big parcel of 25 natural ruby from the mines of ORISSA, India...171 cts and sizes between 21X15mm and 7X9mm...clarity opaque...Heat/filled.......For explanation of filled ruby
The process of fracture filling ruby with transparent lead glass is a recent innovation that began about 2004 in Chanthaburi, Thailand. Rubies of good color, primarily from Madagascar, that are disfigured by fissures or surface cracks can be "repaired" using heat treatment with lead glass. The refractive index of corundum and lead glass are very similar, allowing light to travel through the stone, improving the color and clarity. These rubies are often found in large sizes at a fraction of the cost of untreated ruby of similar color. So they represent an excellent value in the market, so long as the treatment is disclosed and the price is appropriate. The Asian Institute of Gemology tested fractured filled rubies for durability and found them to be more durable than a typical emerald fracture-filled with oil or resin. AIGS advised against excessive heating with a jeweler's torch, but found no negative effects from cleaning with detergents or ultrasonic devices. They advise that hydrofluoric acid should not be used on these gems, and that any recutting or repolishing should be performed with care.(article by courtesy of Gemselect from chanthaburi,Thailand)
船運
| 運輸商 | 運送至：國家 | 運送到世界其他地區 | 聯合運輸（ 法國 ） | 聯合運輸（世界其他地區） |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| Registered Shipping |
|
|
|
|
店鋪
最近的回饋
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積極的It arrived safely without any problems. The color and shape are exactly as described. Thank you very much.
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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
審計
Gemstone Sheriff計畫允許我們的會員要求對任何產品進行審核，該審核由獨立的Gemologist人員完成，該資格人員評估商品描述和圖片的準確性。
送貨細節
成本:
過境:
21透過Registered Shipping計算天數
發貨自:
法國
付款方式
概述
列表類型 :
Standard
產品編號 :
226545
開始 : 29th September 2011 05:05 am PDT
* 所有價格均以：貨幣為單位