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$30.00 USD
价格
5694
16

PARCEL SAPPHIRE CRYSTAL ROUGH FROM MOGOK 7.00 CTS [F2339]

存货单位
尺寸(毫米)
x x mm
重量 (cts)
Certified Gemstones
类型
Rough
颜色

QUALITY ROUGH

SAPPHIRE ROUGH 

 This is a parcel of 2 natural untreated specimens from  Myanmar[Burma].Great specimen or it can be cut.

 

Weight of parcel 7.00 cts app

 

Size of largest 12.1 x 5.6 x 4.2 mm app

 

Sapphire is one of the two gem varieties of the species corundum. Although blue is the best known hue, the gem occurs in virtually every spectral hue excepting red. Red corundum is a ruby. Sapphire may also be colorless, and it also occurs in the non-spectral shades, gray and black. Yellow and green sapphires have traces of iron that gives them their color. Pink sapphires have a trace of the element chromium and the deeper the color pink the higher their monetary value as long as the color is going toward the red of rubies. Sapphires also occur in shades of orange and brown, and colorless sapphires are sometimes used as diamond substitutes in jewelry. Salmon-color padparadscha sapphires often fetch higher prices than many of even the finest blue sapphires.  

 

Treatments

Some natural sapphires are heated to improve or enhance color. This is usually done by heating the sapphires to temperatures of up to 1800 °C for several hours, or by heating in a nitrogen deficient atmosphere oven for seven days or more. On magnification, the silk due to included rutile needles are often visible. If the needles are unbroken, then the stone was not heated; if the silk is not visible then the stone was heated adequately. If the silk is partially broken, then a process known as low tube heat may have been used. Low tube heat is the process whereby the rough stone is heated to 1300 °C over charcoal for 20 to 30 minutes. This removes grey or brown in the stone and improves color saturation.

 

 

运输商 运送至:国家 运送到世界其他地区
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
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

sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
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  • royrock
    royrock
    积极的

    Beautiful agate piece , and as always fast efficient service from Sedagems

审计

Gemstone Sheriff计划允许我们的会员请求对任何产品进行审核,该审核由独立的 Gemologist 人员完成,该资格人员评估商品描述和图片的准确性。

送货细节

船运:
$16.00 :通过 Registered Shipping 计算天数
发货自:
Australia

付款方式

  • paypal
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该卖家在 Australia 的交易中添加 10.00% 税。

概述

列表类型 : Standard
产品编号 : 213166
开始 : 9th November 2024 04:35 pm PST
* 所有价格均以:货币为单位