2M+ REVIEWS | 1000+ NEW GEMS DAILY |

您尚未參與本次拍賣。

$22.00
當前出價
1
出價
關閉
30/07/2019 01:42 am
1
1907
2

SAPPHIRE CRYSTALS FROM BURMA 50.45 CTS [MX7542]

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

 SAPPHIRE ROUGH CRYSTAL

 This is a natural untreated specimen from Myanmar[BURMA].Great specimen.

 

Weight  50.45 cts app

 

Size  26.3 x 16 x 14.5 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

mineralgemworld
mineralgemworld
MEMBER OF THE [ICA]  INTERNATIONAL COLOURED STONE ASSOCIATION AND PRESIDENT OF THE OPAL ASSOCIATION. We have a retail shop/museum at the Gold Coast Opal and Gem Centre 25 surfers av mermaid waters Qld Australia .4218 open mon to sat 10 to 5
:城市,國家
已驗證
:總反饋

投標歷史 (1)
durden
之前從該賣家購買過
4 years ago
$21.00

為什麼用戶出價高於自己?

出價時,這是用戶願意為產品出價的最高金額。然後,我們的系統將代表該用戶自動出價,逐步提高出價以保持其作為最高出價者的地位,直至達到指定的最高價。

當出現“自動出價”圖標時,表示我們的系統正在根據用戶的最高出價主動為用戶出價。這可能看起來好像用戶出價高於自己,但這只是系統更新出價以反映用戶最高限額的結果。

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:
$3.00 :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 : 203694
起拍價 : $21
開始 : 24th July 2019 09:00 am AEST
結束 : 30th July 2019 06:42 pm AEST
* 所有價格均以:貨幣為單位