Bleached And Impregnated Jade | Gemopedia

Jade is often impregnated with wax to disguise fractures and improve its polish appearance. On other occasions, it may be dyed or heated to produce or improve color.
Alternate
Names
Type-B Jadeite, Type-B Jade
Colors
Almost Any Color

Bleached And Impregnated Jade Classification

Common Name

Bleached And Impregnated Jade

Species

Jadeite

Variety

Colors

Almost Any Color

Alternate Names

Type-B Jadeite, Type-B Jade

Gemstone Groups

Key Separations

Appearance, RI, spectrum, SG and magnification.

Comments

Bleached And Impregnated Jade Optical Properties

Transparency

Semitransparent - Opaque

Refractive Index

1.666-1.68
Tolerance:(+0.008/-0.008)

Birefringence

Optic Character

Optic Sign

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Variable
LWUV: Variable

CCF Reaction

Pleochroism

None

Dispersion

Comments

Bleached And Impregnated Jade Chemistry & Crystallography

Chemical Name

sodium aluminum silicate

Chemical Formula

NaAlSi2O6

Synthesis

Crystal System

Monoclinic

Classification

Silicate

Nature

Natural

Crystallinity

Polycrystalline

Comments

Bleached And Impregnated Jade Characteristic Physical Properties

Hardness

6.5-7

Streak

Specific Gravity

3.25-3.4 Typical:3.34

Toughness

Excellent

Inclusions

Type B jadeite has been bleached in acid to remove staining and then it has been impregnated with wax or polymers. It will show etch boundaries between the individual crystal grains. Advanced lab testing is usually required to detect polymer impregnation.

Luster

Vitreous

Stability

Good

Fracture

Splintery, Granular

Cleavage

None

Comments

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