Amazing Large Chunk of Purple Fluorspar / Fluorite found in southetn Illinois. Beautiful example,Heartland Artifact Auctions4.6(880)$10Apr 19, 2026
Natural smoky quartz crystal cluster, a variety of quartz mineral composed of silicon dioxide.Basel Auction House4.5(55)$50Apr 18, 2026
CHROME ALUM MAN-MADE MINERAL SPECIMEN ROCK STONE LAPIDARY SPECIMENCol. Christie Hatman Auctioneers4.4(505)$53 days Left
