The typical external shape a mineral tends to form (prismatic, tabular, botryoidal, etc.); a key descriptive feature collectors use alongside color and luster.
A symmetric intergrowth of two or more crystals; a common, diagnostic feature (e.g., in feldspar) that can help confirm identification and describe crystal form.
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“Cobalt Blue Celestine Thumbnail – Dara-I-Laman, Badghis Province, Afghanistan” has been added to your cart. View cart
