Goldstone | Gemopedia

Goldstone is glass that contains myriad of tiny angular crystals of copper. First made in Italy, goldstone forms by reduction of particles of copper oxide within the glass during a process called annealing. Nothing in nature looks quite like glittering goldstone. Made in three distinct colors (blue, green and orange), goldstone is a tough and durable material that can be made in large pieces and fashioned into slices and objects of almost any desired size and configuration.
Colors
Orange, Brown, Blue

Goldstone Classification

Common Name

Goldstone

Species

NA

Variety

Goldstone

Colors

Orange, Brown, Blue

Alternate Names

Gemstone Groups

Key Separations

Appearance, RI, magnification and warm to the touch

Comments

Goldstone Optical Properties

Transparency

Transparent - Opaque

Refractive Index

1.47-1.7
Tolerance:can go OTL

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Singly Refractive (SR) With ADR

Fluorescence

SWUV: Variable
LWUV: Variable

CCF Reaction

Pleochroism

None

Dispersion

Comments

Goldstone Chemistry & Crystallography

Chemical Name

silica

Chemical Formula

Synthesis

Crystal System

NA

Classification

Nature

Simulant

Crystallinity

Amorphous

Comments

Goldstone Characteristic Physical Properties

Hardness

5-6

Streak

Specific Gravity

2.3-4.5

Toughness

Poor

Inclusions

The adventurescence in goldstone glass is produced by numerous brownish triangular or hexagonal copper platelets. Glass stones often have gas bubbles, flow lines and they might show cavities on the surface.

Luster

Vitreous

Stability

Fracture

Conchoidal, Granular, Uneven

Cleavage

None

Comments

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