Item Information

Dimensions (mm) not provided
Weight (carats) not provided



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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Auction ID 346102
Watchers 13 watching
Viewed 2,078 times
Starts 7th Mar 2013 2:54am PST

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