Simpsonite

Add one script tag to your page:

<div data-gemfyi="entity" data-slug="simpsonite"></div>
<script src="https://cdn.jsdelivr.net/npm/gemfyi-embed@1/dist/embed.min.js" defer></script>

Embed as an iframe:

<iframe src="https://gemfyi.com/iframe/entity/simpsonite/?style=modern&theme=light" width="420" height="400" frameborder="0" loading="lazy" style="border:0;border-radius:10px;max-width:100%"></iframe>

Paste the URL in WordPress, Medium, or Ghost:

https://gemfyi.com/ja/gems/simpsonite/

Shields.io-compatible SVG badge:

![Simpsonite](https://gemfyi.com/badge/entity/simpsonite.svg)

Web Component:

<gemfyi-entity slug="simpsonite"></gemfyi-entity>
<script src="https://cdn.jsdelivr.net/npm/gemfyi-embed@1/dist/embed.min.js" defer></script>

Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 7.0 – 7.5

Specific Gravity 5.9 – 7.3

Refractive Index 1.994 – 2.04

Crystal System Trigonal

Cleavage Indistinct

Fracture Conchoidal

Color various

Birefringence 0.046

Pleochroism Nil

Mohs Hardness

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

Mohs	Reference mineral	Simpsonite
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 Simpsonite

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 Simpsonite

シンプソナイトは非常に稀なアルミニウムタンタル酸塩鉱物で、クリーム色、淡黄色、または無色の板状六角形結晶を形成し、ガラス質から脂質の光沢を持ちます。リチウムを含む花崗岩ペグマタイトに産出し、タイプロカリティであるオーストラリア西部のタッバ・タッバ鉱山とポルトガルに産します。オーストラリアの鉱物学者エドワード・シドニー・シンプソンに因んで命名され、主としてタンタル系鉱物のコレクターが関心を持つ標本です。

On this page