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Comparing per carat prices on Blue Sapphires and Red Spinels

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sparkles

Brilliant_Rock
Joined
May 24, 2002
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662
All things being equal, can the experts please let me know how much I would expect to pay per carat for a medium quality blue sapphire and a red spinel.

Thx
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
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37,511
Price per carat depends on the carat weight. The larger the stone, the more $/carat it is.

What do you consider medium quality? Are you familiar with the GIA grading? It would help if we followed the same colour standard as a starting point.
Saturation?
Hue?
Tone?
 

innerkitten

Ideal_Rock
Joined
Aug 1, 2003
Messages
5,623
Plus it might depend if the sapphire was treated not. What I would do is start looking around and do some comparison shopping. There is a list of colored stone sites at the top of the colored stone forum. You could start with some of those. AJSgems.com is pretty easy to navigate around, cherrypicked.com is fun too. Thenaturalsapphirecompany.com has a large selection of untreated sapphires but some of the cuts are a bit funky so you really have to look around.
 

movie zombie

Super_Ideal_Rock
Joined
Jan 20, 2005
Messages
11,879
Date: 2/7/2009 8:15:16 AM
Author: Chrono
Price per carat depends on the carat weight. The larger the stone, the more $/carat it is.

What do you consider medium quality? Are you familiar with the GIA grading? It would help if we followed the same colour standard as a starting point.
Saturation?
Hue?
Tone?
good question. and don''t forget extinction and windowing.

i saw a spinel that was $1800 small and not too bad but still with at least 50% extinction across the stone: dealer was fully aware of what he had and stated with less extinction or none at all that particular stone would be thousands more. in my mind that $1800 stone was low to middle of medium quality. but that is my mind and eye which will be different for each of us.

mz
 

innerkitten

Ideal_Rock
Joined
Aug 1, 2003
Messages
5,623
Look at the blue on this one. It''s very pretty. Sapphire Platinum Ring
Lot # RG10110 on this page http://www.kashmirblue.com/Jewelry/liquidation.html
 

shaunrice

Shiny_Rock
Joined
Jan 2, 2009
Messages
361
I think... all things considered... a fine blue sapphire will still outprice a fine red spinel any day of the week. And... of course a certified Kashmir origin will blow ANY spinel of "equal" quality out of the water ANY day of the week...
 

chrono

Super_Ideal_Rock
Premium
Joined
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37,511
Date: 2/8/2009 3:26:05 AM
Author: shaunrice
I think... all things considered... a fine blue sapphire will still outprice a fine red spinel any day of the week. And... of course a certified Kashmir origin will blow ANY spinel of ''equal'' quality out of the water ANY day of the week...
Yes, there is no question that any fine unheated blue sapphire or ruby will well outprice a red spinel of equal quality, hence I believe spinels are underrated.
 
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