GRADE A STAR RUBY 7.55 CTS [S1729 ]
- 存货单位
- 尺寸(毫米)
- x x mm
- 重量 (cts)
- 颜色
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SIX STAR RUBY.
This is a beautiful quality 6 star Ruby with reddish purple colours.
We have taken the photo in the sun so you can see how it will look out side.
Hardness 9
Natural -heated
weight7.55 cts app
Size 10x9 x 7 mm
As with all our stock you may return it for a full refund if not pleased.
Member of the International coloured stone association.
A Ruby is a pink to blood red gemstone, a variety of the mineral corundum. The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires.
All natural rubies have imperfections in them, including color impurities and inclusions of rutile needles known as "silk". Gemologists use these needle inclusions found in natural rubies to distinguish them from synthetics, simulants, or substitutes. Usually the rough stone is heated before cutting. Almost all rubies today are treated in some form, with heat treatment being the most common practice. However, rubies that are completely untreated but still of excellent quality command a large premium.
Some rubies show a 3-point or 6-point asterism or star. These rubies are cut into cabochons to display the effect properly. Asterisms are best visible with a single-light source, and move across the stone as the light moves or the stone is rotated. Such effects occur when light is reflected off the silk (the structurally oriented rutile needle. inclusions) in a certain way. This is one example where inclusions increase the value of a gemstone.
- 存货单位
- 尺寸(毫米)
- x x mm
- 重量 (cts)
- 颜色
-
SIX STAR RUBY.
This is a beautiful quality 6 star Ruby with reddish purple colours.
We have taken the photo in the sun so you can see how it will look out side.
Hardness 9
Natural -heated
weight7.55 cts app
Size 10x9 x 7 mm
As with all our stock you may return it for a full refund if not pleased.
Member of the International coloured stone association.
A Ruby is a pink to blood red gemstone, a variety of the mineral corundum. The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires.
All natural rubies have imperfections in them, including color impurities and inclusions of rutile needles known as "silk". Gemologists use these needle inclusions found in natural rubies to distinguish them from synthetics, simulants, or substitutes. Usually the rough stone is heated before cutting. Almost all rubies today are treated in some form, with heat treatment being the most common practice. However, rubies that are completely untreated but still of excellent quality command a large premium.
Some rubies show a 3-point or 6-point asterism or star. These rubies are cut into cabochons to display the effect properly. Asterisms are best visible with a single-light source, and move across the stone as the light moves or the stone is rotated. Such effects occur when light is reflected off the silk (the structurally oriented rutile needle. inclusions) in a certain way. This is one example where inclusions increase the value of a gemstone.
运输商 | 运送至:国家 | 运送到世界其他地区 |
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FedEx | $12.00 / :几天天 | $39.00 / :几天天 |
:国家
FedEx 对包含 2 或更多商品的订单折扣为 $12.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $39.00
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||
Registered Shipping | $9.00 / :几天天 | $16.00 / :几天天 |
:国家
Registered Shipping 对包含 2 或更多商品的订单折扣为 $9.00
世界其他地区
Registered Shipping 对包含 2 或更多商品的订单折扣为 $16.00
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积极的
Beautiful agate piece , and as always fast efficient service from Sedagems
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积极的
Gorgeous stones, very happy
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积极的
Gorgeous stone, very happy