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$21.00 USD
價格
2362
8

2.16 CTS SAPPHIRE CRYSTALS SIR LANKA [MGW4354]

存貨單位
尺寸(毫米)
x x mm
重量 (cts)
類型
Rough
顏色

SAPPHIRE ROUGH CRYSTAL

This is a specimen of natural untreated sapphire crystal from Sir Lanka .

It was selected due to it well formed crystal formations.Great specimen.

Weight 2.16 cts app

Size 11 x 5 x 4 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.

運輸商 運送至:國家 運送到世界其他地區
FedEx $12.00 / :幾天天 $39.00 / :幾天天
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $12.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $39.00
Registered Shipping $9.00 / :幾天天 $16.00 / :幾天天
:國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $9.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $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.
:城市,國家
已驗證
:總反饋

  • gemarab
    gemarab
    積極的

    Great and clear sapphire, beautiful cut ! Great packaging

  • js20031
    js20031
    積極的

    AAAA+++ Very Happy! Just like the pic.

  • js20031
    js20031
    積極的

    AAAA+++ Very Happy! Just like the pic.

審計

Gemstone Sheriff計劃允許我們的會員請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

船運:
$16.00 :通過 Registered Shipping 計算天數
發貨自:
Australia

付款方式

  • paypal
  • stripe
該賣家在 Australia 的交易中添加 10.00% 稅。

概述

列表類型 : Standard
產品編號 : 431916
開始 : 6th November 2024 07:55 pm PST
* 所有價格均以:貨幣為單位