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zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
O.K. Lets test you again. Your mission, should you choose to accept it, is to identify what the gem is in each picture (not just say one of the two is an "x"). You need to say the left gem is x and the right gem is y. Oh, and to confuse the issue, they might be the same gem species. Let''s play!

2gems.jpg
 

FrekeChild

Super_Ideal_Rock
Joined
Dec 14, 2007
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19,456
Garnet and tourmaline!

(I really have no idea!)
 

zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
You need to say which is garnet and which is tourmaline.
 

Richard M.

Brilliant_Rock
Trade
Joined
Feb 17, 2004
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1,104
Zeolite,

I can''t see any evidence of back-facet doubling in either X or Y even with my magnifying glass. It appears both gems are singly refractive unless the tables on both happen to be perpendicular to an SR optic axis. Of the SR/color options I can think of, Malaia garnet(pyrope-spessartine)seems to fit best. I''m guessing both X and Y are Malaia garnets of a particularly lovely hue.
 

zeolite

Brilliant_Rock
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Aug 13, 2008
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Richard,
Quite astute. The right opposed bar gem is a 2.24 ct malaia garnet of amazing brilliance and delicate color. The left shield cut is another type of gem. And Frekechild, you were correct that one was a garnet.
 

zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
No, but you''re right that it is doubly refractive.
 

zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
No, but thanks for playing, and getting the first one so easily.
 

Richard M.

Brilliant_Rock
Trade
Joined
Feb 17, 2004
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1,104
Well, I''ll squeeze in one more. The birefringence seems too low for zircon and morganites of that intense saturation are rare. I trust you''re not fooling us with synthetics so I can only think of padparadscha sapphire.
 

zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
Yes, 0.94 ct padparadscha. Putting in synthetics would not be fair. I chose this pair for their similar color.
 

yingh

Brilliant_Rock
Joined
Jan 14, 2004
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1,420
Ops - I didn't scroll down far enough to see the answer for left. With that, I retract my guess.
 

zeolite

Brilliant_Rock
Joined
Aug 13, 2008
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619
Actually, I do. Haven''t pictured it yet. It is a strong pink from Madagascar. All pink, no orange.
 
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