#71387, Quartz var. Amethyst Quartz with Hematite inclusions, Pearl Station, Canada

#70871, Cerussite (twinned crystals), Mibladen, Morocco (t) $24

#72352, Quartz var. Ametrine Crystal polished slice (rare combination of amethyst and citrine), Anahi Mine, Bolivia (c) $325

#72616, Calcite (twinned crystals), Huancano District, Peru (t) $28

#69307, Azurite (twinned crystals), Tsumeb Mine, Easter Pocket, Namibia (m) $225

#72145, Cerussite (twinned crystals), Tsumeb Mine, Namibia (m) $55

#70505, Quartz var. Smoky-Amethyst with two-phase inclusion (Enhydro), Goboboseb Mountains, Namibia (c) $125

#69333, Arsenopyrite (twinned crystals) with Ferberite, Fluorite, Muscovite, Yaogangxian Mine, China (m) $125

#69218, Calcite (twinned crystals) with Limonite, Daye, Huangshi, China (c) $325

#71048, Quartz var. Amethyst Quartz with Hematite inclusions over Barite, Pearl Station, Canada (m) $38

#54478, Sphalerite (Spinel-Law twinned crystals), Second Sovietskiy Mine, Dalnegorsk, Russia (c) $110

#71023, Calcite (interpenetrant-twinned crystals), Prospect Park Quarry, New Jersey (m) $30

#70278, Calcite (twinned crystals), Daye, Huangshi, China (c) $125

#55409, Epidote (twinned crystals), Alchuri, Shigar Valley, Pakistan (m) $225

#60438, Cerussite (twinned crystals) on Dolomite, Mibladen, Morocco (m) $150

#71025, Calcite (interpenetrant-twinned crystals) on Datolite Cast, Prospect Park Quarry, New Jersey (m) $18

#70585, Malachite (concentric growth malachite polished slice), Kolwezi District, Democratic Republic of the Congo (c) $150

#72620, Barite, Magma Mine, Arizona (t) $22

#64782, Malachite (concentric growth malachite polished slice), Kolwezi District, Democratic Republic of the Congo (c) $150

#61500, Cerussite with Calcite, Tsumeb Mine, Namibia (c) $165

#71398, Calcite (twinned crystals) with Stilbite, Fanwood Quarry (Weldon Quarry), Watchung, New Jersey (c) $28

#72282, Azurite, Sir Dominick Mine, Australia (t) $150

#69331, Cerussite (twinned crystals) with Duftite, Tsumeb Mine, 3rd Oxide Zone, Namibia (t) $250

#69328, Cerussite (twinned crystals) on Tennantite, Tsumeb Mine, 3rd Oxide Zone, Namibia (t) $225

#69237, Calcite (contact-twinned crystals), Daye, Huangshi, China (t) $55

#72700, Calcite (including two twinned crystals), Elmwood Mine, Tennessee (c) $95

#70578, Quartz var. Amethyst Quartz with Hematite inclusions, Pearl Station, Canada (c) $65

#72707, Cerussite (sixling-twinned crystals) on Galena, Tsumeb Mine, Namibia (m) $55

#66285, Galena (Spinel-Law Twins) with Chalcopyrite, Dalnegorsk, Russia (m) $40

#70232, Calcite (twinned crystals) with Apophyllite and Stilbite, Jalgaon, India (c) $225

#72419, Quartz with Goethite inclusions, Millington Quarry, New Jersey (m) $18

#72193, Cassiterite (twinned crystals) on Muscovite with Fluorite, Ehrenfriedersdorf, Germany (t) $55

#64065, Schorl Tourmaline (distorted crystal), Lavra do Escondido, Brazil (m) $25

#72178, Calcite (interpenetrant-twinned crystals), Sokolovskiy-Sarbaiskiy Mine, Kazakhstan (c) $225

#69816, Magnetite (rare cubic and tetrahexahedral crystal form) with Sphalerite, ZCA Mine No. 4, Fowler Ore Body, 2500' Level, New York (c) $350

#70248, Aragonite (pseudohexagonal twinned crystals), Molina de Aragon, Spain (Type Locality for Aragonite) (c) $125

#72678, Cerussite (V-twinned crystals), Mammoth Mine, Tiger District, Arizona (t) $55(c) $85

#72692, Microcline (twinned following the Baveno Law), Moat Mountain, west of North Conway, New Hampshire (c) $55

#68420, Quartz var. Amethyst (with scepter-shaped crystals), Goboboseb Mountains, Namibia (c) $375

#70837, Calcite (interpenetrant-twinned crystals) on Prehnite, Millington Quarry, New Jersey (t) $30

#72866, Calcite (contact-twinned crystals), Anderson Rock Products Quarry, Anderson, Indiana (t) $28

#69394, Copper (unusual twisted crystals), Itauz Mine, Kazakhstan (m) $150

#72030, Cuprite var. Chalcotrichite on Chrysocolla, Ray Mine, Arizona (m) $165

#69412, Cerussite (twinned crystals), Bunker Hill Mine, Idaho (t) $48

#68432, Quartz with Hematite inclusions (with phantom-growth zones), Orange River, Namakwa, South Africa (c) $30

#72969, Topaz (with unusual healed fracture), Dassu, Shigar Valley, Pakistan (m) $350

#73025, Magnetite exhibiting rare cubic habit (set of 8 crystals), ZCA Mine No. 4, Fowler Ore Body, 2500' Level, New York (m) $50

#72973, Calcite (complex penetration twins), Sokolovskiy-Sarbaiskiy Mine, Kazakhstan (m) $125

#73026, Magnetite exhibiting rare cubic habit (set of 8 crystals), ZCA Mine No. 4, Fowler Ore Body, 2500' Level, New York (m) $50

#69315, Cerussite (sixling twin) with Hydrocerussite and Calcite, Tsumeb Mine, Lead Pocket, Namibia (m) $400

#72350, Stibnite in Calcite (butterfly-twinned crystals), Xikuangshan Mine, China (c) $400

#69306, Azurite (twinned crystals), Tsumeb Mine, Easter Pocket, Namibia (m) $850

#54889, Quartz (Japan-law twinned), Llallagua Mine, Bolivia (c) $450

#46640, Calcite (twinned crystals), Roosevelt Avenue Quarry (York Stone Quarry), Pennsylvania (lc) $350

#70587, Quartz var. Ametrine Crystal polished slice (rare combination of amethyst and citrine), Anahi Mine, Bolivia (c) $425

#72333, Beryl var. Aquamarine (cobra-head habit), Balochi, Gilgit-Skardu Road, Pakistan (c) $950

#70546, Quartz var. Ametrine Crystal (rare combination of amethyst and citrine), Anahi Mine, Bolivia (c) $425

#69110, Bournonite (twinned crystals), Yaogangxian Mine, China (m) $450

#65741, Diamond (4.89 carats four polished slices from a single crystal with sector-zoned inclusions ), Zimbabwe (t) $4395

#72914, Datolite nodules with Hematite and Copper inclusions (plus 3 cabochons), Michigan (c) $400

#65742, Diamond (3.31 carats four polished slices from a single crystal with sector-zoned inclusions), Zimbabwe (t) $2995

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