#73964, Epidote (contact-twinned), Alchuri, Shigar Valley, Pakistan (m) $150

#75851, Quartz var. Amethyst (scepter-shaped crystals), Goboboseb Mountains, Namibia (m) $135

#75067, Magnetite exhibiting rare cubic habit (set of 10 crystals), ZCA Mine No. 4, Fowler Ore Body, 2500' Level, New York (t) $34

#73754, Copper (naturally crystallized Spinel-Law twinned native copper crystals), Itauz Mine, Kazakhstan (t) $45

#75066, Magnetite exhibiting rare cubic habit (set of 10 crystals), ZCA Mine No. 4, Fowler Ore Body, 2500' Level, New York (t) $30

#72973, Calcite (interpenetrant twins), Sokolovskiy-Sarbaiskiy Mine, Kazakhstan (m) $150

#76083, Calcite over Calcite, Lowville, New York (t) $55

#75048, Cerussite and Malachite, Tsumeb Mine, Namibia (m) $150

#75082, Beryl var. Cat's-Eye Aquamarine, Brazil (t) $325

#75287, Calcite (butterfly-twinned crystals) with Stibnite inclusions, Xikuangshan Mine, China (c) $375

#73808, Calcite (contact-twinned) on Calcite with Limonite coating, Daye, Huangshi, China (c) $150

#71698, Malachite (polished slice of concentric growth malachite), Kolwezi District, Democratic Republic of the Congo (m) $55

#75037, Quartz var. Amethyst (scepter-shaped crystals), Goboboseb Mountains, Namibia (c) $275

#73949, Cerussite (trilling-twinned crystals) with Duftite and Malachite, Tsumeb Mine, 3rd Oxide Zone, Namibia (t) $225

#71649, Quartz var. Smoky Quartz (Dauphiné Law Twinned), Moat Mountain, New Hampshire (m) $30

#76207, Quartz var. Smoky Quartz (scepter-shaped formation), Tafelkop, Goboboseb Mountains, Namibia (m) $35

#75818, Samarskite-(Y), Burroughs Mine, Colorado (t) $16

#71927, Calcite, Baia Sprie (Felsöbánya), Romania (c) $135

#73965, Sphalerite (Spinel-Law twinned parallel crystals), Second Sovietskiy Mine, Dalnegorsk, Russia (c) $95

#73502, Schorl Tourmaline (doubly terminated distorted crystal), Lavra do Escondido, Brazil (m) $28

#74099, Calcite (twinned crystals) with Stilbite and Apophyllite, Fanwood Quarry (Weldon Quarry), Watchung, New Jersey (c) $30

#75733, Sphalerite (complexly twinned crystals), Logansport, Indiana (m) $250

#75045, Cerussite (sixling-twinned crystals) on Tennantite, Tsumeb Mine, 3rd Oxide Zone, Namibia (t) $175

#73359, Quartz var. Tessin habit with Magnesite, Becker Quarry, West Willington, Connecticut (m) $75

#74690, Sphalerite (lamellar Spinel Law-twinned), Tri-State Lead-Zinc Mining District, Missouri (m) $38

#76557, Calcite (twinned crystals) on Calcite, Taff's Well Quarry, 9 km northwest of Cardiff, Wales (c) $85

#73358, Quartz var. Tessin habit with Ankerite and Muscovite, Becker Quarry, West Willington, Connecticut (m) $65

#76318, Quartz var. Smoky Quartz (doubly terminated Dauphiné Law twinned), Devil's Head, Rampart Range, Colorado (c) $165

#76393, Gypsum var. Fishtail Twins, shore of Potomac River, Virginia (c) $85

#76294, Quartz var. Smoky Quartz Gwindel, Piz Cavardiras, Switzerland (c) $1150

#75574, Calcite (twinned crystals), Roosevelt Avenue Quarry (York Stone Quarry), Pennsylvania (c) $500

#75233, Cerussite (trilling) with Hydrocerussite coating plus Calcite, Tsumeb Mine, Lead Pocket, Namibia (m) $425

#73443, Azurite (twinned crystals) with minor Cerussite, Tsumeb Mine, Easter Pocket, Namibia (m) $400

#76296, Quartz var. Smoky Quartz Gwindel, Val Giuv, Tujetsch, Switzerland (m) $425

#75244, Azurite and Malachite, Milpillas Mine, Mexico (m) $425

#73029, Quartz (with two pairs of Japan-Law Twinned crystals), Llallagua Mine (Siglo XX Mine), Bolivia (c) $400

#73653, Calcite with Fluorite, Denton Mine, Illinois (m) $450

#74728, Azurite (contact-twinned crystals), Tsumeb Mine, Easter Pocket, Namibia (m) $750

#75184, Quartz var. Amethyst Quartz, Goboboseb Mountains, Namibia (m) $400

#75720, Calcite (twinned crystals), Roosevelt Avenue Quarry (York Stone Quarry), Pennsylvania (lc) $295

#72344, Fluorapophyllite-(K) (formerly known as Apophyllite) and Stilbite over Thomsonite, Rahuri, Nagar District, India (m) $400

#75342, Diamond (3.11 carat sector-zoned octahedral brown polished crystal), Murowa Mine, Zimbabwe (t) $5815

#75341, Diamond (4.95 carat sector-zoned octahedral brown polished crystal), Murowa Mine, Zimbabwe (t) $9255

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