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GEOLOGICAL WINDOWPANE SELENITE SPECIMEN ON BLACK MARBLE BASE: Geological windowpane selenite specimen, rising on black marble base, specimen: approx 18.75"h, 12"w, 1"d, overall: approx 22 3/8"h, 12"w, 4.25"d, 13lbs

2026

GEOLOGICAL WINDOWPANE SELENITE SPECIMEN ON BLACK MARBLE BASE

Austin Auction GalleryAustin, TX

Eight Polished Mineral Spheres: A collection of eight polished spherical minerals to include septarian, tiger's eye, stromatolite, assorted jasper, and petoskey. Largest: 6in diameter. | You have additional shipping options, and are

2026

Eight Polished Mineral Spheres

Briggs Auction, Inc.Garnet Valley, PA

Seven Polished Mineral Spheres: A collection of seven polished mineral spheres to include rhodochrosite, larvikite, septaria, mookaite jasper, polychrome jasper, and tiger's eye. Largest: 4in diameter. | You have additional shipping

2026

Seven Polished Mineral Spheres

Briggs Auction, Inc.Garnet Valley, PA

Loose Diamond - OVAL 2.04ct D VVS2: Loose Diamond - OVAL 2.04ct D VVS2 Source: This is a real non-mined Diamond that has been grown in a lab Shape: OVAL Carats: 2.04 Color: D Clarity: VVS2 Certification: IGI Video:

2026

Loose Diamond - OVAL 2.04ct D VVS2

Mynt AuctionsNew York, NY

Aquamarine Lot 1.6 tcw Round Cut 40 gems GIR certified NO RESERVE: aquamarine can be valuable, especially high-quality, deeply colored, but it's generally considered semi-precious and more affordable than top-tier gems like diamonds, though rare blue varieties from B

2026

Aquamarine Lot 1.6 tcw Round Cut 40 gems GIR certified NO RESERVE

California GemstonesSan Diego, CA

Natural Blue Topaz 1.33ct Oval Cut from Brazil IGI Certification No Reserve: a faceted, oval-cut gemstone originating from Brazil. Features the signature deep, dark intense grayish-blue color. Renowned for being "eye-clean" (IF-VVS), this durable gem offers high brilliant-cut

2026

Natural Blue Topaz 1.33ct Oval Cut from Brazil IGI Certification No Reserve

California GemstonesSan Diego, CA

Natural Carnelian Agate 5.83ct Triangle Cabochon Cut from Brazil IGI Certification No Reserve: Brazilian chalcedony is a translucent to opaque gemstone featuring a triangular cabochon cut. Typically sourced from Brazil, this material displays soft orange tones, polished into a smooth, domed sha

2026

Natural Carnelian Agate 5.83ct Triangle Cabochon Cut from Brazil IGI Certification No Reserve

California GemstonesSan Diego, CA

Pink Sapphire 4ct Round Cut from Sri Lanka Bright! Clear!! No reserve: a highly prized gemstone, typically sourced from the country's alluvial deposits. Ceylon pink sapphires are celebrated for their vibrant, intense colors—ranging from delicate light pink to vivid hot

2026

Pink Sapphire 4ct Round Cut from Sri Lanka Bright! Clear!! No reserve

California GemstonesSan Diego, CA

Tanzanite 11.55ct round Cut from Tanzania No reserve: Investment high-grade gemstone, EGL certified as AAAA quality with vivid bluish-violet color. This large,, eye-clean, D-block stone displays intense pleochroism, showing blue, violet, and red flashes.

2026

Tanzanite 11.55ct round Cut from Tanzania No reserve

California GemstonesSan Diego, CA

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve: a striking, deep, inky blue-green hue with subtle gray undertones, meticulously shaped into a brilliant trillion cut. Originating from Brazil, this durable 8-on-Mohs-scale gemstone offers exceptional

2026

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve

California GemstonesSan Diego, CA

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve: a striking, deep, inky blue-green hue with subtle gray undertones, meticulously shaped into a brilliant trillion cut. Originating from Brazil, this durable 8-on-Mohs-scale gemstone offers exceptional

2026

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve

California GemstonesSan Diego, CA

25ct tcw Kashmiri Blue Sapphire Trillion Cut No Reserve GIE Certified PAIR: Historically significant gemstone, characterized by a, velvety "royal" blue color, often due to microscopic silk inclusions. Its triangular, faceted design provides high brilliance. Top-tier gemstones

2026

25ct tcw Kashmiri Blue Sapphire Trillion Cut No Reserve GIE Certified PAIR

California GemstonesSan Diego, CA

Natural Santa Maria Blue Aquamarine 3.5 Ct Round Cut from Brazil: Santa Maria Blue. round-cut natural Aquamarine represents the pinnacle of rarity, boasting the deep, vivid "Double Blue". saturation that is vanishing from the global market. and eye-clean clarity cre

2026

Natural Santa Maria Blue Aquamarine 3.5 Ct Round Cut from Brazil

California GemstonesSan Diego, CA

Natural Amethyst 3.75ct Marquise Cut from Brazil No reserve IGI Certification: A natural, marquise-cut, purple amethyst from Brazil is typically a high-clarity, vibrant stone featuring excellent transparency. Brazilian amethyst is renowned for its quality, ranging from pale lave

2026

Natural Amethyst 3.75ct Marquise Cut from Brazil No reserve IGI Certification

California GemstonesSan Diego, CA

Tourmaline 8.46ct Round Cut from Brazil No reserve GIE Certified Georgeous Color: an exceptionally rare, high-value gem, typically showcasing intense neon blue or green hues due to copper content. As a large, high-carat stone, it is likely to be highly sought after, with premium ex

2026

Tourmaline 8.46ct Round Cut from Brazil No reserve GIE Certified Georgeous Color

California GemstonesSan Diego, CA

11ct Ceylon Pink Sapphire GIE Certified No Reserve: Large-carat gemstone from Ceylon, characterized by vibrant, almost neoon hues and high transparency. Renowned for exceptional brilliance and clarity, this Ceylon stone is highly prized, durable, and i

2026

11ct Ceylon Pink Sapphire GIE Certified No Reserve

California GemstonesSan Diego, CA

Natural Emerald 9.9ct Oval Cut from Sri Lanka GGL Authenticated: Sri Lankan emeralds are rare but known for consistency, with prices for large, clean, high-quality, untreated stones being particularly high. Comparable to top-tier Colombian emeralds.

2026

Natural Emerald 9.9ct Oval Cut from Sri Lanka GGL Authenticated

California GemstonesSan Diego, CA

Natural Peridot 1.15ct Baguette Cut from San Carlos IGI Certification No Reserve: Mined from the San Carlos Apache Reservation in Arizona.Features a slender baguette cut, likely showcasing a vibrant olive-green color typical of the region's magnesium-rich volcanic olivine. San Carl

2026

Natural Peridot 1.15ct Baguette Cut from San Carlos IGI Certification No Reserve

California GemstonesSan Diego, CA

Natural Green Tourmaline 1.58ct Mixed Cushion Cut from Tanzania IGI Certification No Reserve: a high-quality gemstone, often featuring excellent transparency and luster, with a mixed cushion cut designed to maximize brilliance. Tanzanian tourmalines often exhibit vibrant green, bluish-green, o

2026

Natural Green Tourmaline 1.58ct Mixed Cushion Cut from Tanzania IGI Certification No Reserve

California GemstonesSan Diego, CA

Purple Sapphire 19 Pcs Marquise Cut fom Ceylon No Reserve.: Ceylon is renowned for producing vibrant, high-clarity, and often less-included sapphires.

2026

Purple Sapphire 19 Pcs Marquise Cut fom Ceylon No Reserve.

California GemstonesSan Diego, CA

7.2ct Kashmiri Blue Sapphire Cushion Cut No Reserve GIE Certified: These stones are famed for an intense, "velvety" blue hue, often described as "royal blue". This color is typically pure blue without the secondary green or gray undertones found in sapphires from oth

2026

7.2ct Kashmiri Blue Sapphire Cushion Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

6ct Ceylon Pink Sapphire Round Cut No Reserve GGI Certified: characterized by a vibrant pink hue and significant dimensions,this gemstone is prized for it's origin in Ceylon, a region renowned for producing high-quality sapphires with exceptional color and tran

2026

6ct Ceylon Pink Sapphire Round Cut No Reserve GGI Certified

California GemstonesSan Diego, CA

Natural Emerald 10 Ct Square Radiant Cut from Colombia: Natural Colombian emerald features a square radiant cut, blending intense green color with high brilliant-cut facets. Sourced from renowned Chivor mines, this gemstone is designed for maximum sparkle

2026

Natural Emerald 10 Ct Square Radiant Cut from Colombia

California GemstonesSan Diego, CA

Natural Green Emerald 1.33ct Mixed Oval Cut from Colombia IGI Certification No Reserve: featuring a deep green hue due to the region's unique geological conditions. It is cut into a mixed oval shape, enhancing its color and brilliance, and features inclusions, often described as "jardin"

2026

Natural Green Emerald 1.33ct Mixed Oval Cut from Colombia IGI Certification No Reserve

California GemstonesSan Diego, CA

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Fossils Auctions

Beautiful Malachite Dish, 454 grams

Quartz Carved Cockatoos on Pyrite Cluster, 104 grams

Fine Ancient Meteorite Specimen

Summer Jewelry, Fossils and Minerals Auction

Inspired Auctions

Starts on:

Brea, CA, US

4 days Left

MIXED LOT ROCK STONE LAPIDARY SPECIMEN

QUARTZ WIRE TREE EARRINGS ROCK STONE LAPIDARY SPECIMEN

JEWELRY SALE! ROCK STONE LAPIDARY SPECIMEN

NATURAL HISTORY BULK ROCK LAPIDARY

Col. Christie Hatman Auctioneers

Starts on:

Thayer, MO, US

24 hrs Left

Woodland Stone Hawk Effigy Pipe w/ Shell Inlay Eyes

Taino Stone Trigonolith Zemi - Three-Pointed Cemi with Incised Face

Pleistocene Fossil Hyena Skull and Mandible

Native American | Ethnographic | Ancient Art

Artemis Fine Arts

Starts on:

Louisville, CO, US

6 days Left

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