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01/10/2011 04:50 am
PARCEL OF 25 NATURAL RUBY...171 cts
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细节
- 存货单位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- Certified Gemstones
- 不
- 颜色
-
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)
船运
| 运输商 | 运送至：国家 | 运送到世界其他地区 | 联合运输（ 法国 ） | 联合运输（世界其他地区） |
|---|---|---|---|---|
| Standard Shipping - Tracked |
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| Registered Shipping |
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细节
- 存货单位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- Certified Gemstones
- 不
- 颜色
-
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)
船运
| 运输商 | 运送至：国家 | 运送到世界其他地区 | 联合运输（ 法国 ） | 联合运输（世界其他地区） |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| Registered Shipping |
|
|
|
|
店铺
最近的反馈
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积极的It arrived safely without any problems. The color and shape are exactly as described. Thank you very much.
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积极的
Paid and shipped - no feedback left after 100 days
-
积极的
Paid and shipped - no feedback left after 100 days
审计
Gemstone Sheriff计划允许我们的会员对任何产品申请审核，审核由独立的Gemologist人员完成，负责评估产品描述和图片的准确性。
送货细节
成本:
过境:
21通过Registered Shipping计数天数
发货自:
法国
付款方式
概述
列表类型 :
Standard
产品编号 :
226545
开始 : 29th September 2011 05:05 am PDT
* 所有价格均以：货币为单位