Tortoiseshell

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Physical & Optical Properties

Category Organic Gems
Mohs Hardness 3,0
Specific Gravity 1,25 – 1,35
Refractive Index 1,54 – 1,56
Color various

Mohs Hardness

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

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Tortoiseshell

Amazon Wide selection

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

About Tortoiseshell

O casco de tartaruga é um material gema orgânico derivado das placas (escudos) da tartaruga-de-pente, exibindo padrões cálidos de castanho, âmbar, amarelo e negro muito apreciados na joalharia e na decoração desde a Antiguidade. Devido à proteção internacional da tartaruga-de-pente ao abrigo da CITES, o comércio de casco verdadeiro é proibido em quase todo o mundo, sendo substituído por resinas acrílicas sintéticas. Os exemplares antigos têm valor histórico e museológico.

On this page

Jewelry Use

Durability 2/10

Science FYI Family

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Frequently Asked Questions

What is Tortoiseshell?
O casco de tartaruga é um material gema orgânico derivado das placas (escudos) da tartaruga-de-pente, exibindo padrões cálidos de castanho, âmbar, amarelo e negro muito apreciados na joalharia e na decoração desde a Antiguidade. Devido à proteção internacional da tartaruga-de-pente ao abrigo da CITE
What is the hardness of Tortoiseshell?
Tortoiseshell has a Mohs hardness of 3.0, making it relatively soft for use in jewelry.
What color is Tortoiseshell?
Tortoiseshell is primarily Various.
How much does Tortoiseshell cost?
Tortoiseshell falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
How do you care for Tortoiseshell?
Tortoiseshell is relatively soft and should be handled with care. Store separately from harder gemstones to prevent scratching.

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