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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/
Demantoid Single
From our finest gemstones collection
Demantoid Single Oval Slightly to Moderately included
Size: 7.50 X 6.30 MM
Weight: 2.060 CTS
Shape: Oval
Clarity: Slightly to Moderately included
Usually ships within 24 hours
OUR PRICE
USD 1442.00
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Deal of the Day/
Danburite Single
limited time offer, ref# XDN237ds
Danburite Single Octagon Eye clean
Size: 10.80 X 7.90 MM
Weight: 3.800 CTS
Shape: Octagon
Clarity: Eye clean
Usually ships within 24 hours
10 % OFF, YOU SAVE 6.84 USD
NOW ONLY
USD 61.56
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Today’s Trade/
Best Selling Gems:
Sapphire Sapphire
1720 Sapphire ’s available
Browse gems | Learn More
Spinel Spinel
466 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
238 Zircon ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Down Amber -155391 -2.8%
average price USD 183.13 per item
Going Down Sapphire -12472 -0.4%
average price USD 398.30 per item
Going Up Parisite +41099 +5.0%
average price USD 122.67 per item
Going Up Alexandrite +2654 +0.3%
average price USD 2030.47 per item
Going Up Anatase +69489 +9.2%
average price USD 221.50 per item
See more real time gem reports.
Exchange rates to USD
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Euro 0.956
United Kingdom Pounds 0.789
Japan Yen 151.295
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Gem Library /
Gems Legend and  Lore This month birthstone: Aquamarine
More from the Gem Library about Birthstones.
Pisces Pisces
February 19 – March 20
Mutable Sign. Very sensitive. Your zodiac stone...more

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