Realgar

Add one script tag to your page:

<div data-gemfyi="entity" data-slug="realgar"></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/realgar/?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/realgar/

Shields.io-compatible SVG badge:

Realgar badge ![Realgar](https://gemfyi.com/badge/entity/realgar.svg)

Web Component:

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

Physical & Optical Properties

Category Collector Gems
Mohs Hardness 1.5 – 2.0
Specific Gravity 3.56
Refractive Index 2.538 – 2.704
Crystal System Monoclinic
Luster Greasy
Cleavage Good
Color various
Birefringence 0.166
Pleochroism Nearly colorless to pale golden yellow

Mohs Hardness

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

Crystal System

β a b c Monoclinic a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Realgar

Amazon Wide selection

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

About Realgar

レアルガー（鶏冠石）は、鮮やかなオレンジ赤色の砒素硫化物鉱物で、樹脂〜ダイヤモンド光沢を持つ蝋状の結晶を形成し、しばしばオーピメント（雌黄）と共に産します。古代から赤色顔料・花火の原料・殺虫剤として使用されてきた歴史があり、ルーマニア・中国・米国ネバダ州などに著名産地があります。光に長期間さらされると分解が進むため、標本の保管・展示には遮光管理が重要です。

On this page

Jewelry Use

Durability 1/10

Science FYI Family

ChemFYI chemfyi.com AlloyFYI alloyfyi.com GemFYI gemfyi.com StarFYI starfyi.com MineralFYI mineralfyi.com

Frequently Asked Questions

What is Realgar?
レアルガー（鶏冠石）は、鮮やかなオレンジ赤色の砒素硫化物鉱物で、樹脂〜ダイヤモンド光沢を持つ蝋状の結晶を形成し、しばしばオーピメント（雌黄）と共に産します。古代から赤色顔料・花火の原料・殺虫剤として使用されてきた歴史があり、ルーマニア・中国・米国ネバダ州などに著名産地があります。光に長期間さらされると分解が進むため、標本の保管・展示には遮光管理が重要です。
What is the hardness of Realgar?
Realgar has a Mohs hardness of 1.5 to 2.0, making it relatively soft for use in jewelry.
What color is Realgar?
Realgar is primarily Various.
How much does Realgar cost?
Realgar falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Realgar?
Realgar belongs to the Monoclinic crystal system.