Rockman's mineral specimens are hand broken as opposed to being crushed which helps keep cleavage and fracture characteristics intact and provides freshly broken areas for better examination of the specimens. If you are looking for a specimen that is not listed, please contact us; we may have it in stock or we may be able to locate it. Please note that some of our specimens are offered below as 10-packs or 5-packs in resealable bags, or as an individual specimen in a cardboard box or in a resealable bag (as appropriate).
We offers the 3 standard sizes of minerals as illustrated:
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Albite - Plagioclase group (light bluish-gray), some twinning
- 10 Pack - Small [M020b]
- 10 Pack - Medium [M020c]
- 1 Large Sample [M020d]
Amazonite - Microcline Feldspar (greenish-blue, massive to cleavable)
- 10 Pack - Small [M030b]
- 10 Pack - Medium [M030c]
- 1 Large Sample [M030d]
Angelite (pale blue gem variety of Anhydrite - ideal for carving)
- 10 Pack - Medium [M041c]
- 1 Large Sample [M041d]
Apatite - Blue, Green or Tan
- 10 Pack - Small [M068b]
- 10 Pack - Medium [M068c]
- 1 Large Sample [M068d]
| Item Number |
Aragonite - White (massive)
- 10 Pack - Small [M070b]
- 10 Pack - Medium [M070c]
- 1 Large Sample [M070d]
Aragonite - Crystal Cluster (orangish-brown to cream)
- 1 Small Specimen [M071b]
- 1 Medium Specimen [M071c]
Aragonite - Crystal Shape (orangish-brown)
- 10 Pack - Small [M072b]
- 10 Pack - Medium [M072c]
- 1 Large Sample [M072d]
Augite - Pyroxene (olive green to blackish)
- 10 Pack - Small [M075b]
- 10 Pack - Medium [M075c]
- 1 Large Sample [M075d]
Barite - Blue; light blue (crystals in rock matrix)
- 10 Pack - Small [M079b]
- 1 Large Sample [M079d]
Barite - White; white to brown (massive to platy)
- 10 Pack - Small [M080b]
- 10 Pack - Medium [M080c]
- 1 Large Sample [M080d]
Bauxite (gray to brown masses, pisolitic texture)
- 10 Pack - Small [M090b]
- 10 Pack - Medium [M090c]
- 1 Large Sample [M090d]
Biotite - Mica group (black, lustrous cleavage plates)
- 10 Pack - Small [M110b]
- 10 Pack - Medium [M110c]
- 1 Large Sample [M110d]
| Item Number |
Calcite - White, Carmel (rhombohedral cleavage)
- 10 Pack - Small [M121b]
- 10 Pack - Medium [M121c]
- 1 Large Sample [M121d]
Calcite - Iceland Spar (rhombohedral cleavage)
- 10 Pack - Small [M125b]
- 10 Pack - Medium [M125c]
- 1 Large Sample [M125d]
Calcite - Green (some rhombohedral cleavage habit)
- 10 Pack - Small [M124b]
- 10 Pack - Medium [M124c]
- 1 Large Sample [M124d]
Calcite - Orange (little to no cleavage discernable)
- 10 Pack - Small [M126b]
- 10 Pack - Medium [M126c]
- 1 Large Sample [M126d]
Calcite - Lt. Blue (some cleavage discernable)
- 10 Pack - Small [M120b]
- 10 Pack - Medium [M120c]
- 1 Large Sample [M120d]
Calcite - Black (shows rhombohedral cleavage)
- 10 Pack - Small [M119b]
- 10 Pack - Medium [M119c]
- 1 Large Sample [M119d]
Celestite - Lt. Blue (massive to cleavable, some geode parts)
- 10 Pack - Small [M135b]
- 10 Pack - Medium [M135c]
- 1 Large Sample [M135d]
Chalcopyrite (brassy yellow, in rock matrix)
- 10 Pack - Small [M150b]
- 10 Pack - Medium [M150c]
- 1 Large Sample [M150d]
Chlorite (massive, greenish, schistose)
- 10 Pack - Small [M170b]
- 10 Pack - Medium [M170c]
- 1 Large Sample [M170d]
Chromite (black massive, ore of Chromium)
- 10 Pack - Small [M180b]
- 10 Pack - Medium [M180c]
- 1 Large Sample [M180d]
Chrysocolla (greenish-blue, copper bearing mineral, in rock matrix)
- 10 Pack - Small [M185b]
- 10 Pack - Medium [M185c]
- 1 Large Sample [M185d]
Copper Ore - mixture of Azurite & Malachite in rock matrix
- 10 Pack - Small [M204b]
- 10 Pack - Medium [M204c]
- 1 Large Sample [M204d]
Copper - Native; hackley, sharp jagged edges (chemical processed for shine)
- 1 Small Specimen [M200b]
- 1 Medium Specimen [M210c]
Copper - Nugget; natural but tumbled and chemical processed for shine
- 1 Small Specimen [M201b]
- 1 Medium Specimen [M201c]
Dolomite - Pink Crystal clusters
- 10 Pack - Small [M230b]
- 10 Pack - Medium [M230c]
Dolomite - Lt. Tan, Lt. Gray to Pinkish
- 10 Pack - Small [M235b]
- 10 Pack - Medium [M235c]
- 1 Large Sample [M235d]
Epidote - (yellowish-green, massive)
- 10 Pack - Small [M238b]
- 10 Pack - Medium [M238c]
- 1 Large Sample [M238d]
K-Feldspar - Potassium Feldspar group (cream to salmon color, cleavable)
- 10 Pack - Small [M240b]
- 10 Pack - Medium [M240c]
- 1 Large Sample [M240d]
Fluorite - Green/Purple (cleavable)
- 10 Pack - Small [M260b]
- 10 Pack - Medium [M260c]
- 1 Large Sample [M260d]
Fluorite - Green (massive)
- 10 Pack - Small [M265b]
- 10 Pack - Medium [M265c]
- 1 Large Sample [M265d]
Galena (cleavable) - Lead Sulfide; wash hands after handling
- 10 Pack - Small [M280b]
- 1 Large Sample [M280d]
Galena (massive in rock) - Lead Sulfide; wash hands after handling
- 10 Pack - Small [M281b]
- 1 Large Sample [M281d]
Garnet - Almandine (gemstone, dark brownish-red)
- 5 Pack - Small [M023b]
- 5 Pack - Medium [M023c]
Garnet - Andradite (gemstone, in rock matrix with other minerals)
- 5 Pack - Small [M024b]
- 5 Pack - Medium [M024c]
- 1 Large Sample [M024d]
Graphite (black, high-grade, foliated, greasy feel)
- 10 Pack - Small [M311b]
- 1 Large Sample [M311d]
Gypsum - Alabaster (white to light pink, massive)
- 10 Pack - Small [M320b]
- 10 Pack - Medium [M320c]
- 1 Large Sample [M320d]
Gypsum - Satin Spar (white, fibrous, silky luster)
- 10 Pack - Small [M324b]
- 10 Pack - Medium [M324c]
- 1 Large Sample [M324d]
Gypsum - Selenite (mostly transparent, cleavable)
- 10 Pack - Small [M325b]
- 10 Pack - Medium [M325c]
- 1 Large Sample [M325d]
Gypsum Selenite - Desert Rose; crystal cluster
- 5 Pack - Small [M220b]
- 5 Pack - Medium [M220c]
- 1 Large Sample [M220d]
Halite (mostly clear and cleavable)
- 10 Pack - Small [M330b]
- 10 Pack - Medium [M330c]
- 1 Large Sample [M330d]
Halite - Salt (massive, clear to whitish; see Sedimentary for Rock Salt)
- 10 Pack - Small [M335b]
- 10 Pack - Medium [M335c]
- 1 Large Sample [M335d]
Hematite - Specular (black, glistening)
- 10 Pack - Small [M340b]
- 10 Pack - Medium [M340c]
- 1 Large Sample [M340d]
Hematite - Earthy (red, ochre and massive)
- 10 Pack - Small [M345b]
- 10 Pack - Medium [M345c]
- 1 Large Sample [M345d]
Hematite - Hard (red to dark gray, massive)
- 10 Pack - Small [M346b]
- 10 Pack - Medium [M346c]
- 1 Large Sample [M346d]
Hornblende (massive with some crystal cleavage)
- 10 Pack - Small [M350b]
- 10 Pack - Medium [M350c]
Hornblende - Prismatic (cleavable)
- 10 Pack - Small [M351b]
- 10 Pack - Medium [M351c]
- 1 Large Sample [M351d]
Ilmenite - Black/Steel Gray (Titanium ore)
- 10 Pack - Small [M360b]
- 10 Pack - Medium [M360c]
- 1 Large Sample [M360d]
Kaolin/Kaolinite (white to tan, massive)
- 10 Pack - Small [M379b]
- 10 Pack - Medium [M379c]
- 1 Large Sample [M379d]
Kyanite - Blades (blue) in matrix rock or as individual blades
- 10 Pack - Small [M381b]
- 10 Pack - Medium [M381c]
Kyanite - Light Blue (massive, small crystals in matrix) Limited Supply
- 10 Pack - Small [M382b]
Lepidolite - micaceous, massive, lavender (secondary source of Lithium)
- 10 Pack - Small [M390b]
- 10 Pack - Medium [M390c]
Lepidolite - Mica group, platy, lavender (secondary source of Lithium)
- 10 Pack - Small [M391b]
- 10 Pack - Medium [M391c]
- 1 Large Sample [M391d]
Limonite (yellow to brown, massive)
- 10 Pack - Small [M400b]
- 10 Pack - Medium [M400c]
- 1 Large Sample [M400d]
Magnetite (black, can show metallic luster, magnetic)
- 10 Pack - Small [M420b]
- 10 Pack - Medium [M420c]
- 1 Large Sample [M420d]
Magnetite - Lodestone - Nature's True Magnet (brownish-black)
- 1 Small Specimen [M410b]
- 1 Medium Specimen [M410c]
- 1 Large Specimen [M410d]
Microcline - Potash Feldspar group (whitish, cleavable)
- 10 Pack - Small [M435b]
- 10 Pack - Medium [M435c]
- 1 Large Sample [M435d]
Molybdenite (small veins in matrix, ore of Molybdenite)
- 10 Pack - Small [M440b]
- 10 Pack - Medium [M440c]
- 1 Large Sample [M440d]
Muscovite - Mica group (cleavage sheets)
- 10 Pack - Small [M450b]
- 10 Pack - Medium [M450c]
- 1 Large Sample [M450d]
Olivine (coarse-grained with Peridot in Basalt matrix)
- 1 Large Specimen (2.50") [M465c]
- 1 X-Large Specimen (3.5"+) [M465d]
Olivine - Light Green (massive, fine to medium-grained)
- 10 Pack - Small [M460b]
- 10 Pack - Medium [M460c]
- 1 Large Sample [M460d]
Phlogopite - Mica group (brown cleavage sheets)
- 10 Pack - Small [M490b]
- 10 Pack - Medium [M490c]
- 1 Large Sample [M490d]
Plagioclase - Soda-lime Feldspar (gray, massive, small cleavages)
- 10 Pack - Small [M495b]
- 10 Pack - Medium [M495c]
- 1 Large Sample [M495d]
Plagioclase Labradorite - Calcium enriched Feldspar (can show iridescence, various colors)
- 10 Pack - Small [M496b]
- 10 Pack - Medium [M496c]
- 1 Large Sample [M496d]
Pyrite (brass-yellow, crystalline to massive)
- 10 Pack - Small [M504b]
- 10 Pack - Medium [M504c]
- 1 Large Sample [M504d]
Pyrolusite (black, massive, ore of Manganese)
- 10 Pack - Small [M507b]
- 10 Pack - Medium [M507c]
Pyrrhotite - Nickel ore (brassy to bronze, massive)
- 10 Pack - Small [M500b]
- 10 Pack - Medium [M500c]
- 1 Large Sample [M500d]
Rhodonite (rose-pink, Manganese oxide veins, tarnishs to black)
- 10 Pack - Small [M508b]
- 10 Pack - Medium [M508c]
- 1 Large Sample [M508d]
Quartz - Agate (multi-colored, some banding)
- 10 Pack - Small [M511b]
- 10 Pack - Medium [M511c]
- 1 Large Sample [M511d]
Quartz - Amethyst (geode crystal pieces)
- 10 Pack - Small [M521b]
- 10 Pack - Medium [M521c]
- 1 Large Sample [M521d]
Quartz - Aventurine; sea green
- 10 Pack - Small [M520b]
- 10 Pack - Medium [M520c]
- 1 Large Sample [M520d]
Quartz - Citrine; Clear/Orangish-Yellow
- 15 Pack - Small [M518b]
- 1 Large Sample [M518d]
Quartz - Chalcedony (light blue/gray to smoky, partly translucent, waxy)
- 10 Pack - Small [M522b]
- 10 Pack - Medium [M522c]
- 1 Large Sample [M522d]
Quartz - Chert (cream to white massive)
- 10 Pack - Small [M523b]
- 1 Large Sample [M523d]
Quartz - Clear/White Crystals (with terminations)
- 10 Pack - Small [M510b]
- 10 Pack - Medium [M510c]
- 1 Large Sample [M510d]
Quartz - Flint (brown to multicolors)
- 10 Pack - Small [M512b]
- 10 Pack - Medium [M512c]
- 1 Large Sample [M512d]
Quartz - Jasper (red to multicolors)
- 10 Pack - Small [M513b]
- 10 Pack - Medium [M513c]
- 1 Large Sample [M513d]
Quartz - Milky (white, massive)
- 10 Pack - Small [M514b]
- 10 Pack - Medium [M514c]
- 1 Large Sample [M514d]
Quartz - Rose (light pink, massive)
- 10 Pack - Small [M515b]
- 10 Pack - Medium [M515c]
- 1 Large Sample [M515d]
Quartz - Rose (best grade, deep pink, crystalline)
- 10 Pack - Small [M516b]
- 1 Large Sample [M516d]
Quartz - Silicified Wood (wood replaced by Silica)
- 10 Pack - Small [M517b]
- 10 Pack - Medium [M517c]
- 1 Large Sample [M517d]
Sodalite - Deep Blue (massive, some rock)
- 10 Pack - Small [M530b]
- 10 Pack - Medium [M530c]
- 1 Large Sample [M530d]
Sphalerite (dark brown, massive, small cleavages)
- 10 Pack - Small [M527b]
- 1 Large Sample [M527d]
Stibnite - Metallic Gray (crystalline in rock, Antimony Ore, MT)
- 10 Pack - Small [M536b]
- 1 Large Sample [M536d]
Sulfur (yellow, massive)
- 10 Pack - Small [M540b]
- 10 Pack - Medium [M540c]
- 1 Large Sample [M540d]
Talc - Gray/Brown (schistose)
- 10 Pack - Small [M550b]
- 10 Pack - Medium [M550c]
- 1 Large Sample [M550d]
Talc - Light Green/Gray (massive)
- 10 Pack - Small [M551b]
- 10 Pack - Medium [M551c]
- 1 Large Sample [M551d]
Tourmaline - Black (parts of large crystals, may show twinning)
- 10 Pack - Small [M555b]
- 1 Large Sample [M555d]
Trona (processed into baking soda)
- 10 Pack - Small [M570b]
- 10 Pack - Medium [M570c]
- 1 Large Sample [M570d]
Tungsten Ore - Scheelite & Wolframite in rock matrix
- 10 Pack - Small [M587b]
- 10 Pack - Medium [M587c]
- 1 Large Sample [M587d]
Wavellite - Green, botryoidal, hydrous aluminum phosphate (Willard Mine, NV)
- 1 Small Specimen [M583b]
- 1 Medium Specimen [M583c]
Wavellite - White, botryoidal, hydrous aluminum phosphate (Willard Mine, NV)
- 1 Small Specimen [M584b]
- 1 Medium Specimen [M584c]
Vermiculite (brown cleavage sheets, altered form of Biotite or Phlogopite)
- 10 Pack - Small [M580b]
- 10 Pack - Medium [M580c]
- 1 Large Sample [M580d]