Bang Kha Cha area (Bang Kacha; Bangka Cha), Chanthaburi Province, Thailand

South of Khao Ploi Waen, near the village of Bang Kha Cha, blue, bluish green and yellow sapphires are extracted from marine beach placers in silty lowlands in the tidal zone of the Gulf of Thailand.

Dark gray ("black") star sapphires are of special interest.

Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 66

Gemstone List

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