FEATURED3 days Left10.85 Carat --- Royal Colbalt Blue Spinel --- Brilliant Round CutEst. $9,000-$10,000$50California GemstonesSan Diego, CA
FEATUREDStarts Jun 0530 cm Ammonite on stand - Kranaosphinctes sp.Est. $2,000-$2,500$850Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Finest trilobite Drotops megalomanicusEst. $1,500-$2,000$550Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hDeep Lilac Kunzite Gemstone For Jewelry, Natural Kunzite Loose Stone, 60.60Est. $1,500-$2,000$550Chairish AuctionsNew York, NY
Jun 12, 2026Saber Tooth Cat Skull MachairodusEst. $37,500-$55,000$19,000Artemis Fine ArtsLouisville, CO
Jun 12, 2026Rare Fossilized Nimravus Sabertooth Cat SkullEst. $30,000-$45,000$15,000Artemis Fine ArtsLouisville, CO
5 days LeftMonumental Amethyst Geode Cathedral with Hand-Carved Gemstone CockatoosEst. $15,000-$22,000$5,000Williamson Auction GalleryHollywood, FL
Jun 12, 2026T. Rex Fossil Pelvis, Late Cretaceous Western USA 49"L — Custom DisplayEst. $60,000-$90,000$30,000Artemis Fine ArtsLouisville, CO
Jun 11, 2026Loose 2.10 Carat Oval Cut Paraiba-Type TourmalineEst. $6,000-$12,000$3,000Leland LittleHillsborough, NC
Jun 17, 2026176g Laâyoune 002 Lunar Meteorite, With Space Collective COAEst. $10,000-$15,000$3,500University ArchivesWilton, CT
FEATUREDStarts Jun 05Superb "fossil graveyard" with a Campanile giganteumEst. $1,000-$1,200$400Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hNatural Chrome Sphene Titanite Gemstone: 3.10 Carat Round Cut June BirthstoneEst. $1,100-$1,500$460Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hNatural Aquamarine Gemstone: 40.115 Carat Cushion Cut, Pakistan OriginEst. $5,500-$7,000$2,200Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Rare trilobite Crotalocephalus africanusEst. $800-$1,000$320Chairish AuctionsNew York, NY
Jun 12, 2026Extinct Moa Egg & Fragmentary Shell PiecesEst. $19,000-$28,000$9,500Artemis Fine ArtsLouisville, CO
Jun 12, 2026Rare Kentrosaurus Shoulder Spike FossilEst. $40,000-$60,000$20,000Artemis Fine ArtsLouisville, CO
Jun 12, 2026Complete Fossilized Cave Bear Skull - Choice!Est. $12,000-$18,000$6,500Artemis Fine ArtsLouisville, CO
Jun 17, 2026249g Borzya Pallasite Meteorite Specimen, With Space Collective COAEst. $9,000-$15,000$3,000University ArchivesWilton, CT
Jun 12, 2026Campo del Cielo Meteorite w/ Wood Stand & TrailEst. $18,000-$27,000$9,000Artemis Fine ArtsLouisville, CO
Jun 17, 2026494g Agoudal Iron Meteorite Slice, With Space Collective COAEst. $3,000-$4,000$1,000University ArchivesWilton, CT
FEATURED3 days Left8.35 Carat --- San Carlos Benitoite - Oval CutEst. $5,000-$7,000$45California GemstonesSan Diego, CA
FEATUREDStarts Jun 05Fine trilobite combo - Crotalocephalina gr. gibbus and PhacopidEst. $600-$700$240Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hNatural Pinkish Purple Amethyst Gemstone: 47.60 Carat Cushion CutEst. $550-$700$220Chairish AuctionsNew York, NY
FEATURED3 days Left4.02 Carat --- Light Blue Spinel --- Round CutEst. $21,000-$27,000$50California GemstonesSan Diego, CA
Jun 17, 2026799g Muonionalusta Iron Meteorite Slice, With Space Collective COAEst. $3,500-$5,000$1,200University ArchivesWilton, CT
Jun 25, 2026High-Quality Taiji Golden Rutile QuartzEst. £8,000-£16,000£4,000Hans AuctionSouth Croydon, Croydon
Jun 12, 2026Monster 6.1" Megalodon Fossil Tooth — Otodus megalodonEst. $3,500-$5,500$2,000Artemis Fine ArtsLouisville, CO
Jun 25, 2026Rutile Quartz Natural Stone SphereEst. £6,000-£12,000£3,000Hans AuctionSouth Croydon, Croydon
Jun 17, 202647" ROUND CONTEMPORARY MIRROR MADE FROM VIOLET COLORED MICA AND RESIN.Est. $1,200-$1,800$1,200Kamelot AuctionsPhiladelphia, PA
Jun 12, 2026Fossilized Spinosaurus Dinosaur Hand ClawEst. $1,000-$1,500$500Artemis Fine ArtsLouisville, CO
1 day LeftLate Cretaceous Fossil Egg Clutch Attributed to TroodonEst. $6,500-$9,750$3,250Artemis Fine ArtsLouisville, CO
FEATUREDStarts Jun 05Set of five Sauropterygia vertebraeEst. $1,100-$1,500$440Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Excellent black and spiny trilobite - Dicranurus monstrosusEst. $2,000-$2,500$800Chairish AuctionsNew York, NY
FEATURED3 days Left8.46 Carat --- Light Pink Sapphire --- Round CutEst. $9,000-$10,000$50California GemstonesSan Diego, CA
FEATUREDEnds in 5d 5hTri Color Tourmaline Loose Gemstone, Natural Tourmaline Gemstone For RingEst. $5,000-$6,000$2,000Chairish AuctionsNew York, NY