News

Spiral structure in a Colombian emerald
Select category
Flat cavity containing a gas bubble in an unheated yellow sapphire from Sri-Lanka
Micrographs

Flat cavity containing a gas bubble in an unheated yellow sapphire from Sri-Lanka

Read
Blue magmatic-related sapphire from Issoire, Puy-de-Dôme, France, unheated.
Micrographs

Unheated blue magmatic-related sapphire from Puy-de-Dôme, France

Read
Margarite crystals in an unheated ruby from Mozambique
Micrographs

Margarite crystals in an unheated ruby from Mozambique

Read
Spherical gas bubbles in a cavity filled with epoxy resin in a Colombian emerald.
Micrographs

Spherical gas bubbles in a cavity filled with epoxy resin in a Colombian emerald.

Read
Heat-treated bicolour sapphires from Shandong Changle, China
Micrographs

Heat-treated bicolour sapphires from Shandong Changle, China

Read
Epigenetic polycrystalline boehmite nestled in a fissure of an unheated purple metamorphic sapphire
Micrographs

Epigenetic polycrystalline boehmite nestled in a fissure of an unheated purple metamorphic sapphire

Read
Inclusions de cinabre dans une opale éthiopienne
Publication

Cinnabar Inclusions in Ethiopian Opal

Read
Une coupe ethiopienne en corne de rhinoceros
Publication

An Ethiopian cup in rhinoceros horn (1/2)

Read
Coupe éthiopienne en corne de rhinocéros
Publication

An Ethiopian cup in rhinoceros horn (2/2)

Read
An exceptional 9.89 carats photochromic zircon
Publication

An exceptional 9.89 carats photochromic zircon

Read
A jewel with a large number of flux-grown synthetic rubies
Publication

The unusual case of a jewel with a large number of flux-grown synthetic rubies sold as natural rubies

Read
Synthetic flame-fusion colour-change sapphire seen under laser excitation
Micrographs

Synthetic flame-fusion colour-change sapphire seen under laser excitation

Read