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 Home / Gem Library / Natural Gemstones / Color Change Sapphire March 19, 2019  


Natural Color Change Sapphire
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There are 23 Color Change Sapphire(s) available at Multicolour.com


Sapphires which change color as a result of exposure to different light conditions are known as color change sapphires.


Known Facts
Color Key: Color changing blue to purple, greenish brown to red.
Refractive Index: 1.759-1.778
Chemical Composition: AL22O3
Hardness: 9
Density: 4.00
Crystal Group: Hexagonal
Ocurrence: Ceylon, East Africa
Month of the year: September

While many sapphires may exhibit faint color changes upon exposure to incandescent or fluorescent lights occasional stones may display dramatic changes. Most color change sapphires belong to one of two groups depending on their color change; the green to red (alex type), and the blue to purple kind. Most alex type color change sapphires are from Songea, Tanzania while the blue-purple types occur in Madagascar, Sri Lanka, Burma, and other parts of East Africa and Tanzania. In all color change stones, the strength of the change is probabably the most important factor affecting the value of the stones.

Some people prefer the green to red change while others prefer the blue to violet change. The blue to violet change is probably worth more but there are exceptions and a stone with a strong green to red change would also be quite valuable.


Illustrations
Color Change Sapphire
Check our Top, Largest, Smallest or Latest Color Change Sapphire's.


Color Change Sapphire Stats/
Popularity Index: 1122124hits
Total Items: 23items
Total Weight: CTS 35.36
Cheapest: USD 84.24
Most Expensive: USD 3712.00
Largest: CTS 2.98
Smallest: CTS 0.81
Last Added: 11/20/18 08:42:24

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