Vegetable Ivory | Gemopedia

Also known as "tagua," vegetable ivory is the hard white inside of the seeds of certain nut palm trees. Named for its resemblance to elephant ivory, it is often carved for jewelry and ornaments as a renewable alternative to true ivory. Such use has been employed since the 1880's, with material often produced in the coastal rain forests of Ecuador and Peru.
Alternate
Names
Tagua Nut Or Corozo Nut
Colors
White To Light Yellow, But Can Be Dyed Almost Any Color

Vegetable Ivory Classification

Common Name

Vegetable Ivory

Species

Vegetable Ivory

Variety

Colors

White To Light Yellow, But Can Be Dyed Almost Any Color

Alternate Names

Tagua Nut Or Corozo Nut

Gemstone Groups

Key Separations

Magnification

Comments

Vegetable ivory comes from the seeds of certain species of palm trees.

Vegetable Ivory Optical Properties

Transparency

Opaque

Refractive Index

1.54

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: none

Comments

Vegetable Ivory Chemistry & Crystallography

Chemical Name

Chemical Formula

Synthesis

Crystal System

NA

Classification

Organic

Nature

Natural

Crystallinity

Non-Crystalline

Comments

Vegetable Ivory Characteristic Physical Properties

Hardness

2.5

Streak

Specific Gravity

1.38-1.42

Toughness

Inclusions

Vegetable ivory might show parallel lines and has a dot like pattern in cross section.

Luster

Dull

Stability

Fracture

Cleavage

None

Comments

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