News

Spiral structure in a Colombian emerald
Blue residues and gas in bubbles in synthetic sapphire
Micrographs

Blue residues and gas in bubbles in green synthetic quench-cracked flame fusion sapphire

Read
Ruby from Cambodia
Micrographs

Ruby from Cambodia (TE2): Light interference in a thin fracture containing artificial glassy material

Read
GemAlliance welcomes its 5th member: the LFG
Insight

GemAlliance welcomes its 5th member: the LFG

Read
“Boehmite Needles” in Corundum Are Rose Channels
Micrographs, Publication

“Boehmite Needles” in Corundum Are Rose Channels

Read
GemAlliance welcomes its 4th member: the JGGL
Insight

GemAlliance welcomes its 4th member: the JGGL

Read
AIGS & GGTL announce the launch of GemAlliance
Insight

AIGS & GGTL announce the launch of GemAlliance

Read
Origine et croissance des minéraux des fissures alpines dans les Alpes suisses occidentales
Publication

Origin and growth of alpine fissure minerals in the western Swiss Alps: record of fluid flow during exhumation

Read
A Lalique quartz pendant in polarized light
Publication

A Lalique quartz pendant in polarized light

Read
Beads cut from gastropod mollusc shell disguised in a coral necklace
Publication

Beads cut from gastropod mollusc shell disguised in a coral necklace

Read
Multi-treated HPHT-grown synthetic diamonds
Micrographs, Publication

HIH: Multi-treated HPHT-grown synthetic diamonds showing some characteristics of natural diamonds

Read
Natural pearls of the Veneridae family
Publication

Natural pearls of the Veneridae family

Read