Londonite

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Physical & Optical Properties

Mohs Hardness 8.0
Specific Gravity 3.34
Crystal System Isometric
Fracture Conchoidal
Color various

Mohs Hardness

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Londonite
Mohs hardness of Londonite shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Londonite
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 Fine ($500-5,000/ct)

About Londonite

伦敦石是铯铍硼铝磷酸盐矿物族中的一个罕见成员,与赛黄晶有着密切的亲缘关系。伦敦石通常呈无色至淡黄色,透明度好,具有金刚石光泽。它产于富含铯的花岗岩伟晶岩中,产量极低,宝石级晶体十分稀缺。对宝石学家和矿物收藏家而言,伦敦石是一种极具科研价值和收藏意义的稀有矿物,其高折射率赋予了切磨后的宝石出色的光泽表现。

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Jewelry Use

Durability 9/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Londonite?
伦敦石是铯铍硼铝磷酸盐矿物族中的一个罕见成员,与赛黄晶有着密切的亲缘关系。伦敦石通常呈无色至淡黄色,透明度好,具有金刚石光泽。它产于富含铯的花岗岩伟晶岩中,产量极低,宝石级晶体十分稀缺。对宝石学家和矿物收藏家而言,伦敦石是一种极具科研价值和收藏意义的稀有矿物,其高折射率赋予了切磨后的宝石出色的光泽表现。
What is the hardness of Londonite?
Londonite has a Mohs hardness of 8.0, making it excellent for use in jewelry.
What color is Londonite?
Londonite is primarily Various.
How much does Londonite cost?
Londonite 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 Londonite?
Londonite belongs to the Isometric crystal system.

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