Ivory

Q: What is Ivory?

O marfim é uma substância orgânica dura obtida principalmente dos dentes e presas de animais, especialmente elefantes. Foi amplamente utilizado ao longo da história para escultura, joalharia e incrustações decorativas. O marfim tem uma cor branca a creme cálida com uma textura granular característic

Q: What is the hardness of Ivory?

Ivory has a Mohs hardness of 2.0 to 3.0, making it relatively soft for use in jewelry.

Q: How much does Ivory cost?

Ivory falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.

Q: What is the crystal system of Ivory?

Ivory belongs to the Amorphous crystal system.

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Physical & Optical Properties

Category Organic Gems

Mohs Hardness 2,0 – 3,0

Specific Gravity 1,7 – 2,0

Refractive Index 1,535 – 1,57

Crystal System Amorphous

Cleavage None

Color various

Pleochroism None

Mohs Hardness

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

Mohs	Reference mineral	Ivory
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 Budget (< $50/ct)

Where to Buy Ivory

Amazon Wide selection

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Treatments

Heated or dyed with tea to darken the color - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 7 Ivory has been imitated by many look-alike materials that include glass, plastic, bone and vegetable ivory. - Michael O�Donoghue, Gems, Sixth edition, 2006, p.665 2 to 3Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references 1.70 to 2.00Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references NoneWalter Schumann, Gemstones of the world (2001) 1.535 to 1.570Walter Schumann, Gemstones of the world (2001) More from other references NoneWalter Schumann, Gemstones of the world (2001) NoneWalter Schumann, Gemstones of the world (2001) NoneWalter Schumann, Gemstones of the world (2001) White, creamyWalter Schumann, Gemstones of the world (2001) More from other references Translucent,OpaqueWalter Schumann, Gemstones of the world (2001) More from other references Most ivory: bluish white to violet blue (SW weaker)Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Violet-blueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) AmorphousHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Ivory information at mindat.org

About Ivory

O marfim é uma substância orgânica dura obtida principalmente dos dentes e presas de animais, especialmente elefantes. Foi amplamente utilizado ao longo da história para escultura, joalharia e incrustações decorativas. O marfim tem uma cor branca a creme cálida com uma textura granular característica. Devido a preocupações de conservação e legislação internacional, o comércio de marfim de elefante é altamente restrito. O marfim fóssil de mamute lanoso e o marfim de bovino são alternativas legais mais comuns.

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Frequently Asked Questions

What is Ivory?

What is the hardness of Ivory?

Ivory has a Mohs hardness of 2.0 to 3.0, making it relatively soft for use in jewelry.

What color is Ivory?

Ivory is primarily Various.

How much does Ivory cost?