Moissanite

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Physical & Optical Properties

Mohs Hardness 9,0 – 9,5
Specific Gravity 3,17 – 3,24
Refractive Index 2,648 – 2,691
Crystal System Hexagonal
Luster Adamantine
Cleavage None
Fracture Conchoidal
Color various
Birefringence 0,043
Dispersion 0,104
Pleochroism Nil

Mohs Hardness

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Moissanite
Mohs hardness of Moissanite shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Moissanite
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Crystal System

a a c Hexagonal a = b ≠ c, α = β = 90°, γ = 120°

Value & Market

Price Tier Fine ($500-5,000/ct)

Treatments

A near-colourless moissanite has been heat-treated, causing a brownish colour across all the facets. Cleaning and hand-polishing the samples, using cerium oxide on leather, restored the reflectivity to 98% of the non-treated material. If heating forms part of any testing experiment on a suspected moissanite, the gemmologist should remember that surface oxidation could occur and keep the level of heating to a minimum. The colour of the surface might undergo alteration. - Michael O�Donoghue, Gems, Sixth Edition (2006), p. 89 The method of synthesis is probably a modified form of the flux-melt process. - Gemstones, Arthur Thomas, 2009, p 207 9 to 9.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 3.17 to 3.24Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references NoneArthur Thomas, Gemstones (2009) More from other references ConchoidalAnthony et al, Handbook of Mineralogy (2001) May turn yellowish if heated (250 watt bulb)Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 2.648 to 2.691Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Uniaxial/+Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 0.043Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) DoublingMore from other references NilArthur Thomas, Gemstones (2009) More from other references 0.104Arthur Thomas, Gemstones (2009) Colourless, greenish, yellowishUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references AdamantineArthur Thomas, Gemstones (2009) More from other references Usually dark orange or light blueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) HexagonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references TabularArthur Thomas, Gemstones (2009) More from other references A rare mineral: formed in an iron meteorite; as inclusions in diamond; in diamondiferous kimberlites and lamproites, and in eclogite; in volcanic breccias and rhyolite; in alluvium.Anthony et al, Handbook of Mineralogy (2001) Inclusions: white needles - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 32 Moissanite information at mindat.org

About Moissanite

Moissanite é o segundo mineral mais duro conhecido, composta de carboneto de silício, descoberta originalmente em fragmentos do meteorito Canyon Diablo pelo Dr. Henri Moissan em 1893. A moissanite natural é extremamente rara, mas a síntese laboratorial produziu uma alternativa ao diamante de enorme sucesso. Supera o diamante na dispersão da luz, criando um fogo excepcional. Com dureza 9,25 na escala Mohs, a moissanite sintética é durável para uso diário em joalharia. Representa uma escolha ética e económica comparada ao diamante, mantendo propriedades óticas superiores.

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Jewelry Use

Durability 10/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Moissanite?
Moissanite é o segundo mineral mais duro conhecido, composta de carboneto de silício, descoberta originalmente em fragmentos do meteorito Canyon Diablo pelo Dr. Henri Moissan em 1893. A moissanite natural é extremamente rara, mas a síntese laboratorial produziu uma alternativa ao diamante de enorme
What is the hardness of Moissanite?
Moissanite has a Mohs hardness of 9.0 to 9.5, making it excellent for use in jewelry.
What color is Moissanite?
Moissanite is primarily Various.
How much does Moissanite cost?
Moissanite falls into the Fine ($500-5,000/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Moissanite?
Moissanite belongs to the Hexagonal crystal system.

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