Testing reveals the source of a fiber trapped in an emerald during the enhancement process.

An unusual find of orangy red staurolite crystals appear with more expected inclusions in a ruby from Mozambique.

The 2020 Geological Society of America virtual conference covered a variety of interesting gemological topics.

Eye-catching purple spinel crystals polka-dot the surface of a tall pale blue sapphire, a rare confluence of these two gem materials.

Raman analysis helps to confirm the identification of a rare and lovely large blue spodumene.

A gem cutter’s thoughtful design enhances the natural color zoning in an 8.55 ct alexandrite.