Sinhalite

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 6.0 – 7.0

Specific Gravity 3.46 – 3.5

Refractive Index 1.665 – 1.712

Crystal System Orthorhombic

Luster Vitreous

Cleavage None

Fracture Conchoidal

Color various

Birefringence 0.036

Dispersion 0.018

Pleochroism Trichroism: green - light brown - dark brown

Mohs Hardness

Mohs hardness of Sinhalite shown against the ten reference minerals, from talc (1) to diamond (10).

Mohs	Reference mineral	Sinhalite
1	Talc
2	Gypsum
3	Calcite
4	Fluorite
5	Apatite
6	Orthoclase	●
7	Quartz	●
8	Topaz
9	Corundum
10	Diamond

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Sinhalite

Blue Nile Fine jewelry retailer

James Allen Gemstone jewelry

Brilliant Earth Ethically sourced gems

Amazon Wide selection

Links may earn a commission at no extra cost to you.

About Sinhalite

シンハライトは稀なマグネシウム‐鉄アルミニウムホウ酸塩鉱物で、1952年にスリランカ（かつてのセレンディブまたはシンハラ、それが名前の由来）で新種として初めて同定され、淡黄色から暗褐色を呈し、ガラス質の光沢を持ちます。同定されるまでの数十年間、シンハライトは褐色のペリドットと混同されており、その鑑定は宝石学上の重要なマイルストーンとなりました。スリランカとビルマ産の良質なファセット石は稀少宝石のコレクターに人気です。

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