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Name Origin | Euclase is named after Greek "eu" (meaning easy) and "klasis" (meaning fracture) due to the easy cleavage |
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Chemical Formula | BeAlSiO4(OH) |
Color | Colorless, white, pale blue, pale green,violet, yellow |
Hardness | 6.5 - 7.5 on Mohs Scale |
Crystal System | Crystals tabular or prismatic, often well developed |
Cleavage | Perfect 1 direction; fracture conchoidal, brittle. |
Specific Gravity (SG) | 3.08 (colorless); 3.05 - 3.10 |
Luster | Vitreous |
Occurrence |
Eclase is a mineral of granite pegmatites. |
Stone sizes |
Crystals are more commonly found in small sizes, about 1 inch for colorless material. Most euclase are colorless, and colored crystals are very rare. blue and green gems are very scarce over 2-3 carats. |
Continue reading about more color stones
Actinolite
Algodonite
Amber
Andalusite
Amblygonite
Ruby
Aragonite
Sapphire
Azurite
Jet
Chert
Crocoite
Danburite
Gaylussite
Gypsum
Ekanite
Eosphorite
Euxenite
Actinolite
Algodonite
Amber
Andalusite
Amblygonite
Ruby
Aragonite
Sapphire
Azurite
Jet
Chert
Crocoite
Danburite
Gaylussite
Gypsum
Ekanite
Eosphorite
Euxenite
Note: Euclase is a hard enough gemstone to be worn safely in jewelry. It is not terribly exciting too look at in colorless stones, but the colored gems are truly beautiful. The gemstone can be very brilliant, but the cleavage makes cutting difficult.
References:
1- Color Encyclopedia of Gemstones, Joel E. Arem, VNR publications, New York.
1- Color Encyclopedia of Gemstones, Joel E. Arem, VNR publications, New York.