Zigzag Fingerprint in Sri Lankan Sapphire
Fiber-optic illumination reveals rectilinear zigzag-patterned films with vibrant colors in a blue sapphire.
Fissure with Moiré Pattern in Spinel
A precipitation of an unidentified mineral creates a complex moiré pattern in a fissure of a purple spinel.
A Red Herring in a Red Garnet
Rainy Lakeside City in Peridot
Large Stellate Dislocation in Spinel
Inclusion Resembling a Gada in Diamond
Heliodor with a Large Schorl Inclusion
Spray of Columbite Crystals in Topaz
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