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Alexandrite
Enstatite
Opal
Scapolite
Alexandrite Catseye
Feldspar
Padparasha
Silimanite Catseye
Amethyst
Fluorite
Peridot
Sinhalite
Ametrine
Garnet
Quartz
Sphene
Andalucite
Garnet Color Change
Quartz Catseye
Spinel
Apatite
Garnet Grossular
Quartz Stars
Spinel Star
Apatite Cat's Eye
Garnet Hessonite
Ruby
Star Sapphire
Aquamarine
Garnet Rhodolite
Ruby Star
Taaffeite
Aquamarine Cat's Eye
Garnet Spessartine
Rutile
Topaz
Beryl
Garnet Star
Sapphire Blue
Topaz Catseye
Chrysoberyl
Garnet Tsavorite
Sapphire Cats Eye
Tourmaline
Chrysoberyl Catseye
Iolite
Sapphire Green
Tourmaline Bi-Color
Chrysoberyl Stars
Konerupine
Sapphire Lavender
Tourmaline Col/Chg
Citrine
Kunzite
Sapphire Other
Zircon
Cobalt Spinel
Kyanite
Sapphire Pink    
Diopside
Lime Citrine
Sapphire Purple    
Diopside Cat's Eye
Moonstone
Sapphire White    
Diopside Stars
Mystic Topaz
Sapphire Yellow    
 

Also called Dichroite, Iolite is a blue silicate mineral that occurs as crystals or grains in igneous rocks, only as a result of contamination of the magma by aluminous sediment. When clean, blue iolite is sometimes cut as a gem; the stones from the gem gravels of Sri Lanka have been called water sapphires. Iolite has enjoyed a recent resurgence in popularity due to its affordability and similarity to tanzanite and sapphire at a much lower price.


Gemological Information
Color : Violet, Blue, Dark Blue,
Refractive Index: 1.53 - 1.55
Chemical Composition: MG2AL4SI5O18
Hardness: 7 - 7.5
Density: 2.57 - 2.66
Crystal Group: Orthorhombic
Ocurrence: Sri Lanka, Burma, India, Tsivory-Madagascar, Canada, Namibia, Tanzania, Norway, U.S.A., Brazil

Tsavorites are relatively hard so they polish well. Like all garnets, they are singly refractive and as a result can be especially brilliant. Suitable in any kind of jewelry tsavorites offer excellent value and utility at a price more affordable than emeralds, especially in smaller sizes. Clean stones over 10cts. in size are extremely rare and much more expensive.

 
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