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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/
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/
Danburite Single
limited time offer, ref# XDN108ao
Danburite Single Cushion Slightly included
Size: 19.10 X 18.90 MM
Weight: 26.630 CTS
Shape: Cushion
Clarity: Slightly included
Usually ships within 24 hours
10 % OFF, YOU SAVE 55.26 USD
NOW ONLY
USD 497.31
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Today’s Trade/
Best Selling Gems:
Zircon Zircon
227 Zircon ’s available
Browse gems | Learn More
Color Change Garnet Color Change Garnet
219 Color Change Garnet ’s available
Browse gems | Learn More
Sphalerite Sphalerite
16 Sphalerite ’s available
Browse gems | Learn More
Danburite Danburite
321 Danburite ’s available
Browse gems | Learn More
Opal Opal
15 Opal ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Up Amber +112746 +1.4%
average price USD 189.30 per item
Going Down Sapphire -6246 -0.2%
average price USD 401.27 per item
Going Up Alexandrite +182 +0.0%
average price USD 1964.35 per item
Going Up Parisite +159 +0.0%
average price USD 122.67 per item
Going Up Anatase +691 +0.1%
average price USD 221.50 per item
See more real time gem reports.
Exchange rates to USD
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Euro 0.856
United Kingdom Pounds 0.741
Japan Yen 147.060
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Gem Library /
Gems Legend and  Lore This month birthstone: Ruby
More from the Gem Library about Birthstones.
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June 21 – July 22
Cardinal Sign. Relates to water. Your zodiac stone...more

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