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Home / Gem Library / Gemstones Varieties / Anatase May 24, 2022

Natural Anatase

The name anatase is derived from the Greek word anatasis, which means extension, to describe the elongated crystal habit compared to other tetragonal minerals. Anatase is one of several rutile polymorphs and is found in igneous and metamorphic rocks and as a detrital mineral in sediments. Crystalline polymorphs are materials that are chemically identical but exist in more than one crystal form.

  • There are 8 Anatase gemstones available at
  • Anatase(s) are organized in the following categories: RoughSingle,  gemstones.
  • Our most expensive Anatase is USD 300.00 and largest Anatase weight is CTS 13.82.
  • Our cheapest Anatase is USD 62.50 and smallest Anatase weight is CTS 0.25.

Anatase Profile

Color information: Brown, pale yellow,reddish brown, indigo, black, light green, lilac, Grey or nearly colorless, yellow brown, or blue in transmitted light.
Refractive Index: 2.488 - 2.561
Chemical Composition: TiO2
Hardness: 5.5 - 6.0
Density: 3.79 - 3.97
Crystal Group: Tetragonal
Sign of the Zodiac: N/A
Month of the year: N/A
Anatase Anatase
Crystals of anatase are often found with a well-developed pyramidal or tabular habit. They can be blue, red, brown, or colorless, although examples of orange, dark red, reddish-brown, and bluish green also occur. Its pleochroism is weak but more distinctive in the intensely colored specimens. The blue coloration of anatase may be due to the presence of Ti3+ and Ti2+.

Anatase is a metastable mineral form of titanium dioxide. It may change to rutile under specific thermodynamic conditions. Anatase is one of the five forms of titanium dioxide found in nature. The others are Akaogiite, Brookite, Riesite, and Rutile.

It is usually found isolated as small, sharply developed crystals. Like its thermodynamically stable cousin, rutile, it crystallizes tetragonally. The mineral is mainly encountered as a black solid, although pure material is colorless or white. Some crystals may appear opaque because of total reflection.

Due to its potential application as a semiconductor, anatase has been grown synthetically.

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Anatase range/
Anatase Rough
Anatase Rough Fancy Opaque
Size: 16.00 X 15.20 MM
Weight: 8.340 CTS
Shape: Fancy
Clarity: Opaque
Usually ships within 24 hours
USD 300.00
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Anatase Single
Anatase Single Octagon Translucent
Size: 5.20 X 2.70 MM
Weight: 0.250 CTS
Shape: Octagon
Clarity: Translucent
Usually ships within 24 hours
USD 62.50
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