Description
Quartz window from Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Metropolitan City of Bologna, Emilia-Romagna, Italy. Comes with certificate of authenticity. Average weight (Carats): 110.0 carats. Dimensions (mm): 45 x 29 x 20 mm. Ref. : SKU035411. Silicon dioxide (SiO2) mineral formed under various geological conditions. Widely used in jewelry for its diversity of colors and its hardness.
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