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  • Goldstone

Goldstone

Glass

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV
Published: June 2014
Modified: November 2021
Goldstone Polished Goldstone Jewelry
Table of Contents
  • General Information
  • Goldstone Colors
  • Alternate Names
  • Countries of Origin
  • History
  • Care

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.

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Goldstone
Species
Glass
Transparency
Transparent - Opaque
Refractive Index
1.470-1.700
Tolerance:can go OTL
Optic Character
NA
Optic Sign
NA
Polariscope Reaction
Singly Refractive (SR) With ADR
Fluorescence
SWUV: Variable
LWUV: Variable
Pleochroism
None
Hardness
5-6
Specific Gravity
2.300-4.500
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
Fracture
Conchoidal, Granular, Uneven
Cleavage
None
Chemical Name
silica
Crystal System
NA

Goldstone Colors

  • Green Goldstone
    Green
  • Blue Goldstone
    Blue
  • Orange Goldstone
    Orange
  • Brown Goldstone
    Brown

Alternate Names

Aventurine

Countries of Origin

Unknown; China; Italy

History

First made in Italy, goldstone is glass that contains a myriad of tiny, angular, copper crystals. It forms by the reduction of particles of copper oxide within the glass during a process called annealing. Glittering goldstone is found in blue, green, and orange. It's a tough and durable material that is made in large pieces and fashioned into slices and objects of almost any desired size and configuration. Beads, baubles, and faceted gems - goldstone can do it all.

Care

Normal care

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