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Natural Idocrase

Idocrase, is a fascinating mineral found originally on the volcano, Mt Vesuvius, hence one of the names; vesuvianite. The name, idocrase, is greek in origin and means mixed form, an allusion to its crystals showing a mixture of other mineral forms. The crystals belong to the tetragonal symmetry class and show a square cross-section perpendicular to the long axis.


  • There are 21 Idocrase gemstones available at Multicolour.com
  • Idocrase(s) are organized in the following categories: Single,  gemstones.
  • Our most expensive Idocrase is USD 1157.76 and largest Idocrase weight is CTS 8.40.
  • Our cheapest Idocrase is USD 19.68 and smallest Idocrase weight is CTS 1.64.

Find your Idocrase

Our Idocrase(s) are available in various shapes, sizes and colors. 21 Idocrase(s), too many to look through? You may select any combination of search options. Colors grade into each other and you can search for more than one color at once. For a better selection, try selecting two or three colors, -- your first choice plus the two closest colors.

Shape Length (mm) Width (mm)
Category Weight (cts) Price (USD)
Color range
yellow-green or green-yellow
strongly yellowish green

Idocrase Profile

Color information: normally green, but also can be brown, yellow, blue and/or purple.
Refractive Index: 1.71 - 1.73
Chemical Composition: nesosilicate or sorosilicate
Hardness: 6.5
Density: 3.3 - 3.5
Crystal Group: Tetragonal
Ocurrence: Quebec, Canada; California and the New England region of USA; Mt Vesuvius, Italy; Ural Mountains, Russia, Switzerland, East Africa
Sign of the Zodiac: N/A
Month of the year: N/A
Idocrase Idocrase

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Finest gems/
Malaia Garnet Single
From our finest gemstones collection
Malaia Garnet Single Cushion Eye clean
Size: 15.60 X 9.40 MM
Weight: 9.980 CTS
Shape: Cushion
Clarity: Eye clean
Usually ships within 24 hours
OUR PRICE
USD 2155.68
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Deal of the Day/
Amber Single
limited time offer, ref# YAR123ac
Amber Single Fancy Slightly to Moderately included
Size: 19.41 X 18.25 MM
Weight: 5.770 CTS
Shape: Fancy
Clarity: Slightly to Moderately included
Usually ships within 24 hours
10 % OFF, YOU SAVE 13.90 USD
NOW ONLY
USD 125.10
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Today’s Trade/
Best Selling Gems:
Sapphire Sapphire
1685 Sapphire ’s available
Browse gems | Learn More
Spinel Spinel
460 Spinel ’s available
Browse gems | Learn More
Alexandrite Alexandrite
298 Alexandrite ’s available
Browse gems | Learn More
Tanzanite Tanzanite
454 Tanzanite ’s available
Browse gems | Learn More
Zircon Zircon
237 Zircon ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Down Amber -23513 -0.5%
average price USD 183.13 per item
Going Down Sapphire -571 +-0.0%
average price USD 397.34 per item
Going Up Alexandrite +1839 +0.3%
average price USD 2069.44 per item
Going Down Parisite -1249 -0.2%
average price USD 122.67 per item
Going Down Anatase -2233 -0.4%
average price USD 221.50 per item
See more real time gem reports.
Exchange rates to USD
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Euro 0.962
United Kingdom Pounds 0.799
Japan Yen 156.776
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Gem Library /
Gems Legend and  Lore This month birthstone: Turquoise
More from the Gem Library about Birthstones.
Sagittarus Sagittarius
November 22 – December 21
Mutable Sign. Goes at a great gallop. Your zodiac stone...more

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