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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 25 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 13.68 and smallest Idocrase weight is CTS 1.64.

Find your Idocrase

Our Idocrase(s) are available in various shapes, sizes and colors. 25 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/
Sapphire Single
From our finest gemstones collection
Sapphire Single Octagon Eye clean
Size: 11.80 X 8.20 MM
Weight: 6.300 CTS
Shape: Octagon
Clarity: Eye clean
Usually ships within 24 hours
OUR PRICE
USD 11340.00
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Deal of the Day/
Amber Single
limited time offer, ref# YAR102aa
Amber Single Fancy Transparent
Size: 16.60 X 12.92 MM
Weight: 4.530 CTS
Shape: Fancy
Clarity: Transparent
Usually ships within 24 hours
10 % OFF, YOU SAVE 18.90 USD
NOW ONLY
USD 170.10
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Today’s Trade/
Best Selling Gems:
Sapphire Sapphire
1473 Sapphire ’s available
Browse gems | Learn More
Spinel Spinel
367 Spinel ’s available
Browse gems | Learn More
Tanzanite Tanzanite
441 Tanzanite ’s available
Browse gems | Learn More
Alexandrite Alexandrite
301 Alexandrite ’s available
Browse gems | Learn More
Zircon Zircon
257 Zircon ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Down Amber -14368 -0.6%
average price USD 177.84 per item
Going Down Sapphire -5847 -0.4%
average price USD 348.04 per item
Going Up Alexandrite +501 +0.1%
average price USD 1641.70 per item
Going Down Color Change Garnet -448 -0.3%
average price USD 736.55 per item
Going Down Anatase -8042 -5.2%
average price USD 185.71 per item
See more real time gem reports.
Exchange rates to USD
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Euro 1.012
United Kingdom Pounds 0.883
Japan Yen 140.813
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Gem Library /
Gems Legend and  Lore This month birthstone: Tourmaline
More from the Gem Library about Birthstones.
Libra Libra
September 23 – October 22
Cardinal Sign. Libra is artistic and harmonious. Your zodiac stone...more

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