#81533, Rutile (V-twinned crystals), Graves Mountain (Kyanite Mine), Georgia (m) $295

#80696, Apophyllite (with green zones), Jalgaon, India (m) $24

#80879, Quartz var. Smoky Quartz (Dauphiné twin), Echo Chamber Pocket, Dreamtime Claim, Crystal Peak area, Colorado (c) $75

#80378, Scheelite on doubly-terminated Quartz, Yaogangxian Mine, China (c) $295

#82387, Andradite Garnet, Antetezambato, Madagascar (t) $55

#80768, Wulfenite coated with Quartz, Jianshan Mine, Kuruktag Mountains, 300 km southeast of Ürümqi, China (c) $225

#80631, Cassiterite (twinned crystals), Xuebaoding Mountain near Pingwu, China (m) $325

#81588, Chalcocite with Chalcopyrite-Bornite coating, Flambeau Mine, Ladysmith, Wisconsin (t) $55

#81342, Sphalerite (contact twinned crystals), Tri-State Lead-Zinc Mining District, Missouri (m) $45

#81693, Cassiterite (twinned crystals), Mexico (t) $38

#81334, Datolite pseudomorphs after Glauberite (epimorphs), Prospect Park Quarry, New Jersey (c) $85

#80852, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $125

#80454, Stilbite on Quartz epimorphs after Laumontite over Calcite, Pune District, India (c) $35

#80594, Ferberite (V-twinned crystals), Cerro Tazna, Bolivia (m) $95

#75662, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $36

#81584, Chalcocite with Chalcopyrite-Bornite coating, Flambeau Mine, Ladysmith, Wisconsin (t) $65

#81202, Sphalerite (lamellar twinned) with minor Calcite, Mid-Continent Mine, Kansas (m) $65

#81556, Pyrite with Chalcocite coating plus Quartz, Milpillas Mine, Mexico (m) $55

#81595, Chalcocite with Chalcopyrite-Bornite coating, Flambeau Mine, Ladysmith, Wisconsin (t) $48

#80175, Calcite with Quartz overgrowth, Droujba Mine, Bulgaria (c) $55

#82505, Tanzanite (blue-violet color change gem variety of Zoisite), Merelani Hills, Tanzania (Type Locality for Tanzanite) (t) $95

#75761, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $55

#82572, Tanzanite (blue-violet color change gem variety of Zoisite), Merelani Hills, Tanzania (Type Locality for Tanzanite) (t) $90

#75663, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $30

#80288, Fluorite (internally color zoned), Xia Yang, Yongchun, China (c) $225

#81954, Titanite (twinned crystals) with Chlorite, Hunza Valley, Pakistan (t) $25

#82291, Calcite (twinned crystals), Carrière Pont-à-Nôle, Belgium (t) $25

#81220, Spinel (unusual blue color), Mahenge, Tanzania (t) $48

#81785, Malachite hollow stalactite, Kolwezi Mining District, 240 km WNW of Lubumbashi, Democratic Republic of the Congo (t) $34

#81966, Calcite (twinned crystals), Millington Quarry, New Jersey (t) $34

#82649, Quartz var. Smoky Quartz (with rare crystal faces), Oliver Diggings, Middle Moat Mountain, New Hampshire (t) $24

#82056, Cassiterite (twinned crystals), Emmons Quarry, southeastern slope of Uncle Tom Mountain, Maine (t) $38

#82402, Rutile (twinned crystals), Graves Mountain (Kyanite Mine), Georgia (t) $125

#82655, Quartz var. Smoky Quartz (Dauphiné twin), Lake George District, Colorado (t) $36

#81945, Quartz var. Smoky Scepter Formation, Intergalactic Pit, Deer Hill, Maine (t) $24

#82111, Psilomelane (Pyrolusite, Romanèchite, Cryptomelane), Lake Valley District, New Mexico (t) $25

#82310, Tremolite var. Chrome Tremolite, Mangari, Kenya (t) $45

#82075, Hematite var. Turgite, Malaysia (m) $150

#82136, Calcite with Brucite(?) inclusions, Khwaye Mine, Loralai, Pakistan (t) $28

#82073, Hematite var. Turgite, Malaysia (m) $125

#82424, Tyuyamunite, Carlin Trend, Nevada (t) $15

#82170, Cassiterite (twinned crystals), Horní Slavkov (Schlaggenwald), Czech Republic (t) $115

#82357, Titanite (twinned crystals), Capelinha, Brazil (t) $25

#82230, Calcite with Jamesonite inclusions, Herja Mine (Kisbanya), Romania (t) $38

#82544, Beryl var. Heliodor with pseudomorphic cavity after Quartz, Volodarsk-Volynskii, Ukraine (t) $150

#82681, Quartz var. Black Herkimer Diamond with black hydrocarbon inclusions, Hickory Hill Diamond Diggings, New York (t) $38

#82510, Quartz var. Black Herkimer Diamonds with black hydrocarbon inclusions, Hickory Hill Diamond Diggings, New York (t) $42

#82376, Aragonite (pseudo-hexagonal twinned crystal), Barrel Spring Creek, Wyoming (t) $18

#82405, Apophyllite, Pashan Hill Quarry, Pune District, India (t) $22

#82488, Inesite, N'Chwaning II Mine, South Africa (t) $55

#82667, Rhodochrosite stalactitic formations, Capillitas Mine, Argentina (t) $35

#82630, Torbernite, Mine de Margabal, Rodez, France (t) $24

#82664, Calcite (red), Mexico (t) $10

#82672, Topaz with Hematite and Rutile inclusions, Coneto de Comonfort, Mexico (t) $38

#82511, Quartz var. Black Herkimer Diamonds with black hydrocarbon inclusions, Hickory Hill Diamond Diggings, New York (t) $26

#82599, Bismuth (Synthetic), Man-made (t) $30

#81551, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $195

#81555, Fluorite (zoned crystals) with Quartz, Boltsburn West Level, south side of Rookhopeburn, England (c) $875

#81554, Wulfenite with Mimetite overgrowth, Mina La Morita, Mexico (c) $795

#81514, Fluorite (stalactitic formation that formed over Stibnite), Weishan, Dali Autonomous Prefecture, China (c) $400

#81570, Calcite (internally zoned), Dalnegorsk, Russia (m) $550

#80343, Azurite partially altered to Malachite, Milpillas Mine, Mexico (m) $425

#81538, Bournonite (twinned crystals) with Boulangerite micros, Yaogangxian Mine, China (m) $400

#81501, Grossular Garnet and Calcite (floater cluster crystallized on all sides), Handan, China (m) $495

#81539, Bournonite (cog-wheel twinned crystals) with Boulangerite micros, Yaogangxian Mine, China (m) $450

#81550, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $150

#75670, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $75

#81536, Bournonite (complexly twinned crystals) with Boulangerite micros, Yaogangxian Mine, China (m) $350

#75677, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $45

#72837, Diamond (1.27 carat pale-brown elongated macle, twinned uncut diamond), South Africa (t) $1430

#75675, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $65

#81541, Bournonite (cyclic twinned crystals) with Boulangerite micros, Yaogangxian Mine, China (m) $375

#81542, Bournonite (twinned crystals), Yaogangxian Mine, China (m) $375

#81540, Bournonite (cyclic twinned crystals), Yaogangxian Mine, China (t) $375

#81545, Bournonite (doubly terminated complexly twinned crystals), Yaogangxian Mine, China (t) $350

#81547, Bournonite (doubly terminated cyclic twinned crystals), Yaogangxian Mine, China (t) $325

#81544, Bournonite (doubly terminated complexly twinned crystals), Yaogangxian Mine, China (m) $225

#81546, Bournonite (doubly terminated twinned crystals), Yaogangxian Mine, China (t) $225

#82176, Fluorite (Spinel Law twinned), Erongo Mountains, Namibia (t) $500

#81543, Bournonite (cyclic twinned crystals), Yaogangxian Mine, China (t) $225

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