Omphacite and Chromite: A "Bimineralic Inclusion" in Diamond
Two inclusions appear joined in a diamond host.
Pink Tourmaline in Spodumene
A large, rare inclusion is found in a spodumene host.
Green Crystals in Yellow Sapphires
Two yellow sapphires yield surprising green inclusions.
Beryl Crystal in Fluorite
A purple fluorite contains an elongate, rod-shaped beryl crystal.
Dendritic Inclusions in Cambodian Sapphire
A sapphire from Pailin, Cambodia, hosts inclusions that are unusual for this material.
Quarterly Crystal: Cr-Diopside in Diamond
A bright green chromium diopside inclusion is seen in a diamond from South Africa's Kimberley mine.
Update on Russian Demantoid Production
Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.
The Very Deep Origin of the World’s Biggest Diamonds
Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.
Quarterly Crystal: Shattuckite in Quartz
A quartz crystal from Namibia, hosting of spherulitic to circular masses of shattuckite, is examined.
Inclusions in Natural, Synthetic, and Treated Ruby
Provides a visual guide to the internal features of natural, synthetic, and treated rubies.