Mosaic Opal Triplet | Gemopedia

As an affordable alternative to larger sized solid opals, mosaic opal triplets provide an affordable, and stylish, substitute. They are created by assembling a montage of small, thin opal slices and adhering them to a solid base material, which may be natural or man-made. The base material, often dark in color, provides a dramatic backdrop to the overall appearance of the triplet.
Alternate
Names
Chip Opal Triplet
Colors
Variety Of Colors

Mosaic Opal Triplet Classification

Common Name

Mosaic Opal Triplet

Species

Mosaic Opal Triplet

Variety

Colors

Variety Of Colors

Alternate Names

Chip Opal Triplet

Gemstone Groups

Key Separations

Appearance and magnification

Comments

The cap can be made of colorless synthetic spinel, rock crystal quartz or glass. The RI of cap will help you distinguish the make up of the stone. The base can be made of potch opal, dyed black chalcedony, glass or other matrix materials.

Mosaic Opal Triplet Optical Properties

Transparency

Transparent - Opaque

Refractive Index

1.47-0

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Singly Refractive (SR)

Fluorescence

SWUV:
LWUV:

CCF Reaction

Pleochroism

None

Dispersion

Comments

Mosaic Opal Triplet Chemistry & Crystallography

Chemical Name

Chemical Formula

Synthesis

assembled

Crystal System

NA

Classification

Nature

Composite

Crystallinity

Amorphous

Comments

Mosaic Opal Triplet Characteristic Physical Properties

Hardness

Streak

Specific Gravity

Toughness

Inclusions

Look for assembled nature and glue layer of a mosaic opal triplet. Stones are made up of small irregular shaped pieces of opal glued on a base. Stones have the appearance of a mosaic tile.

Luster

Vitreous

Stability

Fracture

Cleavage

None

Comments

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