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$180.00 USD
价格
5565
16

9.23 CTS VS LIGHT CLOURED HESSONITE GARNET [GAR4]

存货单位
尺寸(毫米)
x x mm
重量 (cts)
颜色

 

HESSONITE GARNET

Weight 9.23 cts
Clarity VS
Size 15.2 x 10.6 x 6.9 mm
Hardeness  7
   
Origin Tanzania
Treatment   None

 

Hessonite or Cinnamon Stone is a variety of grossular, a calcium aluminium mineral of the garnet group with the general formulaCa3Al2Si3O12. The name is from the Greek hÄ“ssÅn, inferior, in allusion to its lower hardness and density than most other garnet species varieties.

It has a characteristic red color, inclining to orange, much like that of gem zircon. Indeed it was shown many years ago, by Sir A. H. Church , that many gems, especially engraved stones, commonly regarded as zircon, were really hessonite. The difference is readily detected by the specific gravity, that of hessonite being 3.64 to 3.69, whilst that of zircon is about 4.6. Hessonite has a similar hardness to that of quartz, about 7 on the mohs scale, whilst the hardness of most garnet species can reach 7.5.

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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

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概述

列表类型 : Standard
产品编号 : 346102
开始 : 22nd November 2024 02:00 am PST
* 所有价格均以:货币为单位