Quarterly Crystal: Spessartine in California Quartz
A smoky brown quartz crystal from Ramona, California, plays host to a 3.3 mm reddish orange spessartine.
Unique Fingerprint in Montana Sapphire
A group of fingerprint and crystal inclusions form the shape of a bird in a Montana sapphire.
Heliodor and Aquamarine with Surface Etching
Hexagonal etch features are observed on the prismatic faces of heliodor and aquamarine crystals.
Square-Shaped Cloud in Diamond
A natural faceted diamond displays a prominent square-shaped cloud under the table.
Pyritic Inclusions in Oregon Sunstone
Examination of an Oregon sunstone sample reveals pyritic and copper inclusions.
“Conch Shell” in Diamond
A transparent feather observed in a natural diamond resembles a conch shell.
Fireworks in Ruby
An unheated purplish red ruby cabochon displays a white double-star phenomenon.
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