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Blue spinel. Slight color change to purple in incandescent light.
COLOR CHANGE BLUE TO PURPLE SPINEL 0,57 CT
Blue color change spinel 6.09 cts.
Faceted Blue Spinel by GIA
Blue color change spinel 2.64 cts.
Color change spinel under pen light
Ceylon Colour Change Sapphire - Changing Blue To Purple ( Danu Group Gemstones )
Blue Spinel 2.80 cts.
Color Change Blue Spinel Gem 27.75 Carat | Amazing Sapphire
Color change spinel 4.33 Carats
R A R E - Natural Cobalt Blue Colour Change Spinel
What are Color CHANGE Gems? | Jill Maurer
