Amblygonite is a mineral with a hardness of 6 out of 10 on the Mohs scale of mineral hardness [?]. These Triclinicly structured gems are made of lithium aluminum hydroxyphosphate, their full chemical compound being LiAl(F,OH)PO4.

Amblygonite is a not so popular gem whose greek name means crooked. It comes in green, clear, yellow, and even purple. Older cut specimens may have slightly rounded facet edges due to the gems lack hardness (6 of 10).

Amblygonite can be found in Brazil, France, the United States, Burma, and even Sweden. It may be confused easily with Brazilianite.

Why haven't I heard of Amblygonite before?

Despite being a beautiful gemstone, Amblygonite is relatively unknown outside collector circles. It's rarely used in commercial jewelry due to its scarcity and moderate hardness (6 Mohs).

Is Amblygonite valuable for its lithium content?

While it contains lithium, it's rarely mined for this purpose today. Other minerals like spodumene are more commercially viable for lithium extraction. Gem-quality pieces are valued for collecting and occasional jewelry use.

How can I identify Amblygonite?

Look for pearly luster, white to pale yellow color, and perfect cleavage in one direction. Can be confused with albite or petalite, but has distinct fluorescence under UV light and different optical properties.

Where is the best Amblygonite found?

Fine specimens come from Brazil, particularly Minas Gerais. Other notable locations include Maine (USA), Germany, and Australia. Transparent crystals suitable for faceting are extremely rare.

Does Amblygonite require special care?

Yes, its perfect cleavage and moderate hardness make it vulnerable to damage. Avoid ultrasonic cleaners, protect from impacts, and store separately from harder stones. Clean only with soft cloth and mild soap.

What makes a specimen valuable?

Transparent crystals suitable for faceting are most valuable. Large, well-formed crystals are prized by collectors. Color isn't as crucial as clarity and crystal quality. Historical specimens from classic locations command premium prices.

The specific gravity [?] for Amblygonite is 3.02, its refractive index [?] is 1.57-1.60, and its double refraction [?] is 0.026.

History

It was first found and noted in 1817 and named from the Greek amblus meaning crooked.

Industrial Usages

We are unaware of any industrial usages of Amblygonite at the moment.