Quartz
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Crystal tip with contemporary intaglio - BrazilDisplayed in a glass and bras
Polished crystal point with phantom (180 g) – Brazil displayed in a glass box
AMETHYST stalactite slice (Uruguay) – 15 g Rotating brass stand
Double-pointed crystallized white quartz (215g), in a reliquary; originating from Romania
Quartz from Madagascar with chlorite inclusions on black base