Triplite Inclusions in Quartz from Yaogangxian, China
Pinkish orange crystal inclusions in a faceted quartz are identified as the rare phosphate mineral triplite.
Interesting Metallic Platelets in a Brazilian Paraíba Tourmaline
Microscopic observation unveils the first known instance of skeletal metallic inclusions in Brazilian Paraíba tourmaline.
Night Sky in Yellow Sapphire
Fiber-optic light creates a night sky scene in a yellow sapphire from Madagascar.
Rainbow Mountain in Natural Diamond
An iridescent feather inclusion in natural diamond bears resemblance to Rainbow Mountain in Peru.
Patchy Yellow Trigon
Isolated nitrogen confined to the outer surface of a 0.98 ct diamond causes “yellow skin.”
An Iridescent “Insect Wing” in Diamond
A feather inclusion with iridescence caused by thin-film interference in diamond resembles an insect wing.
Internal World of Aquamarine from Xinjiang
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