Rare Specimens
rare specimens — pre-owned
Browse 2,805 rare specimens — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
Lake Superior Michigan Greenstone Chlorastrolite 2.10 carats
BIG SUR JADE LARGE OCEAN TUMBLED A GRADE NUGGET 248 GRAMS- 12.9 OZ JADE COVE
FROM JADE COVE CALIFORNIA. HIGHLY CHATOYANT BIG SUR JADE. Spanish Conquistadors saw natives holding pieces of the stone to their sides to cure or relieve various aches and pains. Jade is thought to be a precious gem known as the “stone of heaven” and has been treasured for thousands of years.
Big Sur Jade Stone Green Botryoidal Nephrite Jade Specimen Monterey CA USA 🇺🇸
This product is a unique and rare piece of botryoidal nephrite jade from Big Sur, California. The green pebble-shaped stone is polished by the ocean, giving it a distinct and natural beauty. This specimen is a true collectible item, showcasing the beauty of nature from the United States, in excelent cosmetic condition, no scratches, cracks, chips or visible damage, free shipping included.
Beautiful Pyrite On Rhodochrosite specimen
1 inch pyrite on pink rhodochrosite from Henderson mine Colorado
Beautiful Scorodite thumbnail specimen
1cm bluish black scorodite from Guangxi China
TETRAHEDRITE - Bingham Canyon Mine, Salt Lake County, UTAH
Highly lustrous crystals of tetrahedrite on, and forming matrix with pyrite. Rarely seen classics from the 1950's.
BARITE var. HOKUTOLITE - Tamagawa Hot Springs, Akita Prefecture, JAPAN
Barite var. This rare barite varietal is known from only a few acidic hot springs worldwide. This was from the collection of Arizona mineral legend Arthur Flagg (1892 - 1961), founder of the Mineralogical Society of Arizona and author of a number of books.
Bisbee Campbellite Ultra Grade Rough Loaded w/ Copper - BIG 403ct - AZ Seller!
Weight: About 403ct. About this item(s): See the video ! Very high grade Bisbee, Arizona campbellite rough for collecting or lapidary work. Loaded with copper. Bisbee Minerals ®. Fine minerals and mining artifacts from Bisbee and around the world.
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OTTENSITE - Type Locality - Qinglong Mine, Dachang Ore Field, Guizhou, CHINA
From the original 2007 find at the type locality. A second Italian locality for the species has been located with greater availability, but these from the type locality have grown scarce. Qinglong Mine, Dachang Antimony Field, Guizhou, China (Type Locality).
Bisbee Campbellite Ultra Grade Rough Stunning Matrix - BIG 489ct - AZ Seller!
Weight: About 489ct. About this item(s): See the video ! Very high grade Bisbee, Arizona campbellite rough for collecting or lapidary work. Loaded with copper. Bisbee Minerals ®. Fine minerals and mining artifacts from Bisbee and around the world.
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Rare Royal Aztec Lace Agate Purple Polished Specimen Mexico
Rare Royal aztec lace agate from Mexico, this has been mined out since the 60’s, excellent colors! Weight is 98 grams These are natural stones taken under LED lighting. Stones may have flaws such scratches, cracks or natural imperfections. Rough is shown wet. Can combine items in shipping
Grape Agate Botryoidal Chalcedony Crystal 3.8” Mineral - West Sulawesi Indonesia
Rare 3.8” Large Druzy Grape Agate Sparkly Botryoidal Chalcedony Crystal Cluster 230g Crystal Centerpiece Specimen - West Sulawesi, Indonesia - Item:AG23042 This is the exact crystal you’ll receive. Super sparkly Locality: West Sulawesi, Indonesia Weight: 230 grams Dimensions: 3.8”/3”
AZURITE w/ CHATOYANT MALACHITE - MILPILLAS MINE - 64g. RARE GEMSTONE SPECIMEN
(Now a depleted source). It also produced a small amount of azurite with chatoyant malachite. This is hard, gem-grade material with A+ chatoyant properties. Would make an insane pendant set in gold.
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XL AAA+ Holley Blue Agate! Facet Grade!! 52.17g; Old Stock, 1970’s Material
Any serious Agate Collector has heard of Oregon’s infamous Old stock of Holley Blue Agates-unfortunately now UnObTaInAbLe since the ‘80s! 😉 Well, I’ll be Releasing a Treasury of the highest quality you’ve ever seen! SUCH 🔮Grab a piece of Oregon Mineral History! ✨⚖️AAA+ 52.17g of Purple to Indigo to Blue color changing insanity! This material was dug up in the late 70’s and stashed away for over 45 years! 🌞It hasn’t seen sunlight (Which fades Holley) until I’ve started working it!💜 Old stock & Only from Southern Oregon! Wholesale & High End Available!
630G Natural spirit quartz cluster Cactus amethyst crystal specimen Healing
This 630 Gram Natural Spirit Quartz Cluster Cactus Amethyst Crystal Specimen is a rare and unique piece originating from the United States. This collectible item features a quartz cluster with a beautiful amethyst crystal formation, making it a valuable addition to any collection of crystals and mineral specimens. With its natural beauty and healing properties, this quartz cluster is sure to be a standout piece for collectors and enthusiasts alike.
Phosphophyllite: Gem Quality Crystal Mineral Specimen Bolivia - 4,2 cm 1,65 inch
Known for its vivid sea-green to bluish-green hues, phosphophyllite is among the most coveted phosphate minerals by collectors worldwide. Country of Origin : Bolivia. Origin : Mina Huaylliani, Potosi, Bolivia.
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Dioptase - Brilliant Crystals - 128g. Rare DRC Mine - See Video - US Seller!
Weight: About 128g. Tantara, Katanga Copperbelt, Haut-Katanga Province, Democratic Republic of the Congo. Al slabs or lapidary rough can have unforeseen weaknesses including hidden cracks and soft / weak areas.
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Big Sur Jade Lot 50 Ocean Polished Small Jewelry Stones Round Oval Teardrop
These are small Big Sur Jade stones I collected myself in Big Sur. They are naturally polished by the ocean waves and I haven't enhanced them in any way. They are dry and unoiled. They make a great addition to your red coral and or white stones.
Fibrous Malachite Top Shelf Bisbee Specimen - Nice 1.2lbs - Arizona Seller
Bisbee Minerals ® Fine minerals and mining artifacts from Bisbee and around the world. Remarks: Multiple vugs filled with fibrous malachite. Typical oxidized brown Bisbee matrix. About this item(s): Insane presentation of a vug within a classic Bisbee.
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Dioptase - High Grade Big Crystals - 25g. Rare DRC Mine - See Video - US Seller!
Weight: About 25g. Tantara, Katanga Copperbelt, Haut-Katanga Province, Democratic Republic of the Congo. Al slabs or lapidary rough can have unforeseen weaknesses including hidden cracks and soft / weak areas.
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CONNELLITE, CUPRITE - Dunlop Mine, near Mina, Mineral County, NEVADA
A small but exceptional spray of connellite from a little known Nevada locality. I can find no references to the species from the locality. An old label from Minerals unlimited simply listed malachite and cuprite, but later handwriting says "Note the blue crystals in vug.
Martite Pseudomorph after Magnetite 176g Cerro de Mercado Durango Mexico
An outstanding, highly scientific addition to any advanced mineral cabinet, academic collection, or unique shelf display tray.
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Banded Chrysocolla Malachite Specimen - LARGE 345g! - Congo - US Seller
Weight: About 345g. About this item(s): World class, gigantic, banded combination of chrysocolla, malachite andheterogenite (black material), direct from the Congo mines.Partially polished on the face.
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Beautiful Scorodite thumbnail specimen
1cm bluish black scorodite from Ojuela mine Mexico
Beautiful Strengite specimen
Beautiful 2 inch strengite from Sweden
30g WOODHOUSEITE WHITE MTS. CALIFORNIA USA #292
WHITE MTS. CALIFORNIA USA.
Turkish Agate Polished Nodule Pseudomorph Spray Display Fluorescent 10.7 oz
Beautiful Turkish agate nodule with polished face and natural rough exterior. Fluorescent photo was taken with a high-power shortwave UV light. It remains solid and displays well, but the fracture is reflected in pricing.
Cerussite Crystal Specimen Kapi Mine Dundas Tasmania Australia Mineral Labeled
This piece showcases a dense cluster of brilliant, high-luster cerussite micro-crystals intergrown on a contrasting gossan matrix. The crystals display the classic adamantine shine and complex habit that have made Tasmanian lead-basin secondary minerals famous worldwide.
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Beautiful Rhodochrosite specimen
1cm reddish rhodochrosite from Henderson mine Colorado
Black Nephrite Jade, Ocean Polished Washington State, 736 grams
• Verified Quality: High-integrity, dense nephrite with the signature inky-blue undertone. This stone is exceptionally dense and exhibits a deep midnight blue-black saturation that is highly prized by jade collectors.
Ballas Diamond Natural Round Canadian Diamond 2.5 ct
This listing is for a natural ballas diamond from Canada weighing approximately 2.3 cts and with a diameter of 6mm. Ballas diamonds are naturally occuring round diamonds that are polycrystalline, formed as aggregates of diamond grains concentrically arranged with radiating structure into a roughly spherical stone. Most ballas diamonds are found in Brazil, but this one was mined in Canada making it extra rare! The stone is relatively dark at first glance but is transparent when shining a light through it (refer to the video). Don't miss your chance to get a relatively uncommon diamond specimen from a rare locality!
Classic! Gem CALCITE - Bigrigg Mine, Egremont, Cumberland, England
An astoundingly nice, gem clear, naturally multifaceted Calcite crystal from the esteemed finds in Cumberland, England! This material is super classic and this is a very good example of it. Mounted in a 1.5” perky box.
100g Rhenium Metal Arc Melted High Density Element Sample
Nice dense Rhenium metal element collection piece. Arc melted, very dense with "pour" lines on both sides and some large mirror-like areas. This is a rounded puck type shape, First 3 photos upper, final photo lower side.
Beautiful Colemanite Thumbnail specimen
1.5 cm white colemanite from California
Blue-Green Vesuvianite, Andradite, UV Willemite & Calcite from Franklin, NJ
Beautiful Deep Blue-Green Vesuvianite, Brown Andradite Garnet, Willemite (Green SW UV) & Calcite (Red/Orange SW UV). I Collected This As Part of a Larger Piece on the Buckwheat Dump Many Years Ago, and Have Never Seen Another There Since!
Cavansite Crystal Cluster 1.8” 63g Mineral Specimen - Wagholi Mine, India
Cavansite with Stilbite Crystal Cluster 1.8” 63g Mineral Specimen - Wagholi Mine, Maharashtra, India This is the exact specimen you’ll receive. Large vibrant Cavansite with Stilbite. Spectacular color and luster. Locality: Wagholi Mine, Maharashtra, India Weight: 63 grams Dimensions: 1.8”/1.5”/1.4”
Benitoite, Natrolite
Two Benitoite crystals on Natrolite. The Benitoite crystals are incomplete, however they still possess an excellent reaction to shortwave UV light. Benitoite Gem Mine.
WHITE POTASSIUM ALUMINIUM-K 16g 1.3in ALUMINUM MINE ESMERALDA CO NEVADA #215
A NICE EXAMPLE OF POTASSIUM ALUMINUM AS ITS MINED. FROM THE ALUMINUM MINING DISTRICT IN NEVADA USA.
Rare Hornitos Jasper Orby Colorful Slab 58 Grams Mariposa California
Rare Hornitos Poppy Jasper. from Mariposa California. Brings out the bright red. Pictures Taken wet in Bright Sunlight. United States, Worldwide.
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TL! Rare CHILDRENITE on Matrix - George & Charlie’s Mine, Devon, England
A stellar, quite large specimen of Childrenite on matrix from its type locality - Devon, England!! A great rare specimen to add to any collection. Comes with old label! 9 x 5 x 5.5 cm.