FEATURED3 days Left8.00 Carat ---- Green Tourmaline ---- Trillion Cut ---- EGL CertifiedEst. $3,500-$7,700$50California GemstonesSan Diego, CA
FEATUREDEnds in 5d 5hGreen Sphene Gemstone: Natural Titanite Round Cut, June BirthstoneEst. $700-$800$300Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Rare trilobite Caudillaenus nicolasiEst. $350-$400$150Chairish AuctionsNew York, NY
1 day LeftGEOLOGICAL AGATE SLICE SPECIMEN 1-LIGHT TABLE LAMP ON ACRYLIC BASEEst. $200-$400$150(1 bid)Austin Auction GalleryAustin, TX
1 day LeftGreen River Fossil Panel of Three Diplomystus FishEst. $600-$900$300Artemis Fine ArtsLouisville, CO
1 day LeftGEOLOGICAL APOPHYLLITE CLUSTER ON POLISHED NICKLE BASEEst. $150-$250$100(1 bid)Austin Auction GalleryAustin, TX
1 day LeftLot Of Two Quartz And Rhodonite TazasEst. $4,000-$6,000$1,500Auction Plus, Inc.Costa Mesa, CA
1 day LeftGEOLOGICAL PETRIFIED WOOD SLICE ON ACRYLIC BASEEst. $150-$250$100Austin Auction GalleryAustin, TX
2 days LeftMosasaur 'Marine Dinosaur' Fossil Jaw FragmentEst. £60-£80£20(2 bids)TimeLine Auctions Ltd.Harwich, Essex
Jun 25, 2026Polished Ammonite Spiral Shell Fossilized SpecimenEst. $1-$1,000$1(1 bid)MiddleManBrokers Inc.Sunrise, FL
2 days LeftFossil Megalodon Giant Shark ToothEst. £80-£100£55(5 bids)TimeLine Auctions Ltd.Harwich, Essex
FEATUREDEnds in 5d 5hNatural Peridot Gemstone: 2.38 Carat Fancy Cut, August BirthstoneEst. $250-$300$100Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Argonauticeras besairiei ammonite with prepared septumEst. $800-$1,000$320Chairish AuctionsNew York, NY
FEATURED3 days Left8.46 Carat --- Light Pink Sapphire --- Round CutEst. $9,000-$10,000$50California GemstonesSan Diego, CA
FEATURED3 days Left8.5 Carat --- Green Sapphire --- Trillion Cut --- EGL CertifiedEst. $9,000-$12,000$35California GemstonesSan Diego, CA
2 days LeftFossil Megalodon Giant Shark ToothEst. £80-£100£15(2 bids)TimeLine Auctions Ltd.Harwich, Essex
1 day LeftSet Of Three Black Onyx & Rhodochrosite CenterpiecesEst. $2,500-$3,500$1,500Auction Plus, Inc.Costa Mesa, CA
2 days LeftLoose Diamond - RADIANT 12.05ct Fancy Intense Pink VS1Est. $18,746-$24,369$100Mynt AuctionsNew York, NY
3 hrs LeftLoose Diamond - OVAL 22.13ct Fancy Vivid Pink VVS2Est. $17,355-$22,561$13,250BidhausNew York, NY
FEATUREDEnds in 5d 5hNatural Amethyst Gemstone: Exquisite Fancy Cut, 24.60 CaratsEst. $300-$350$120Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Fine 16.5 cm ammonite Douvilleiceras mammillatumEst. $550-$700$220Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hNatural Pinkish Purple Amethyst Gemstone: Asscher Cut, 19.80 CaratsEst. $250-$300$95Chairish AuctionsNew York, NY
FEATURED1 day Left535ct Natural Burmese Moss in Snow Jadeite Rough - Deep Green Patterned Slab, 63EAEst. $120-$240$60ThousandPlanetSathorn, Bangkok
2 days LeftVery Large Madagascan Fossil Tree Trunk SectionEst. £80-£100£5TimeLine Auctions Ltd.Harwich, Essex
21 hrs LeftIdeal Loose Diamond - ROUND 24.19ct G VS1Est. $26,442-$34,374$100Mynt AuctionsNew York, NY
Live NowLoose Diamond - HEART 10.06ct Fancy Intense Pink VS2Est. $13,065-$16,984$100Mynt AuctionsNew York, NY
2 days LeftLoose Diamond - RADIANT 19.09ct Fancy Vivid Pink VVS2Est. $9,646-$12,539$100Mynt AuctionsNew York, NY
FEATUREDStarts Jun 05Fine trilobite combo - Crotalocephalina gr. gibbus and PhacopidEst. $600-$700$240Chairish AuctionsNew York, NY
FEATUREDStarts Jun 05Collection of seven "bonebed" fossilsEst. $250-$300$100Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hBi Color Tourmaline Gemstone For Ring, Bluish Green Tourmaline Stone, 1.5CTEst. $250-$300$110Chairish AuctionsNew York, NY
FEATUREDEnds in 5d 5hNatural Amethyst Gemstone: Flower Fish Eye Cut, February Birthstone (27.20 Carats)Est. $350-$400$150Chairish AuctionsNew York, NY