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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 20 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 7.80.
  • 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. 20 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/
Taaffeite Single
From our finest gemstones collection
Taaffeite Single Cushion Eye clean
Size: 7.20 X 7.00 MM
Weight: 2.230 CTS
Shape: Cushion
Clarity: Eye clean
Usually ships within 24 hours
OUR PRICE
USD 14238.00
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Deal of the Day/
Beryl Single
limited time offer, ref# ZBE100df
Beryl Single Oval Slightly included
Size: 7.00 X 5.00 MM
Weight: 0.690 CTS
Shape: Oval
Clarity: Slightly included
Usually ships within 24 hours
10 % OFF, YOU SAVE 4.14 USD
NOW ONLY
USD 37.26
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Today’s Trade/
Best Selling Gems:
Demantoid Demantoid
5 Demantoid ’s available
Browse gems | Learn More
Phenakite Phenakite
1 Phenakite ’s available
Browse gems | Learn More
Quartz Quartz
1 Quartz ’s available
Browse gems | Learn More
Scapolite Scapolite
23 Scapolite ’s available
Browse gems | Learn More
Grossularite Grossularite
5 Grossularite ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Up Tanzanite +312844 +5.4%
average price USD 469.80 per item
Going Up Sapphire +1337 +0.6%
average price USD 395.01 per item
Going Down Amber -1349 -1.0%
average price USD 197.21 per item
Going Down Alexandrite -966 -0.9%
average price USD 2469.53 per item
Going Down Spinel -1585 -2.3%
average price USD 450.81 per item
See more real time gem reports.
Exchange rates to USD
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Euro 0.861
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Japan Yen 157.540
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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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