![Roman Agate Gemstone with Bird: 2nd-3rd century A.D. Intaglio perching bird motif with frond. 0.46 grams, 11.29 mm (3/8 in.). [No Reserve] From the private collection of a European gentleman (1942-2024), formed since the 1970s. Time](https://p1.liveauctioneers.com/1191/415803/231330677_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474167&width=280)
Est. £100-£140
TimeLine Auctions Ltd.Harwich, Essex
Est. $200-$400
Bryant Art AuctionPlacentia, CA
Est. $780-$1,014
Mynt AuctionsNew York, NY
Est. $442-$574
BidhausNew York, NY
Est. $442-$574
BidhausNew York, NY
![Sasanian Agate Stamp Seal: Circa 3rd-7th century A.D. and later Plano-convex in form with possibly later incuse design, three fish and other objects. 18.34 grams, 27.23 mm (1 in.). [No Reserve] From the private collection of a](https://p1.liveauctioneers.com/1191/415804/231332094_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474526&width=280)
Est. £60-£80
TimeLine Auctions Ltd.Harwich, Essex
![Large Sasanian Banded Agate Stamp Seal: Circa 4th-5th century A.D. Plano-convex in section with lightly incised standing figure with sword and shield in his outstretched hands. 13.21 grams, 27.07 mm (1 in.). [No Reserve] From the private co](https://p1.liveauctioneers.com/1191/415805/231334271_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474898&width=280)
Est. £60-£80
TimeLine Auctions Ltd.Harwich, Essex
Est. $600-$800
Bartons AuctionBethlehem, PA
Est. $585-$760
BidhausNew York, NY
Est. $585-$760
BidhausNew York, NY
![Western Asiatic Decorated Agate Bead Group: 1st millennium B.C. Each with a grooved geometric concentric lozenge design. 3.28 grams total, 14.04-16.10 mm (1/2 - 5/8 in.). [3, No Reserve] From the private collection of a European gentleman (1942](https://p1.liveauctioneers.com/1191/415804/231332154_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474526&width=280)
Est. £80-£100
TimeLine Auctions Ltd.Harwich, Essex
![Very Large Cut and Polished Blue Agate Crystal Geode Slice: Showing fine banding and a crystal-lined centre, dyed to a vibrant dark blue colour. 679 grams, 25.5 cm (10 in.). [No Reserve] Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Har](https://p1.liveauctioneers.com/1191/415806/231335481_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
![Large Sasanian Agate Stamp Seal: Circa 4th-5th century A.D. Plano-convex in section with lightly incised geometric motif to underside. 18.52 grams, 27.58 mm (1 in.). [No Reserve] From the private collection of a European gentleman (1](https://p1.liveauctioneers.com/1191/415804/231332485_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474526&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
Est. $351-$456
Mynt AuctionsNew York, NY
![Large Sasanian Banded Agate Stamp Seal: Circa 4th-5th century A.D. Plano-convex in section with geometric design to underside. 29.52 grams, 32.52 mm (1 1/4 in.). [No Reserve] From the private collection of a European gentleman (1942-2024),](https://p1.liveauctioneers.com/1191/415805/231334309_1_x.jpg?height=280&quality=70&sharpen=true&version=1777474898&width=280)
Est. £60-£80
TimeLine Auctions Ltd.Harwich, Essex
Est. £60-£80
TimeLine Auctions Ltd.Harwich, Essex
![Group of Six [6] Large Cut, Polished and Felt-Backed Agate Coasters: A graduated set of highly polished slices, each showing brown to beige banding, four showing nearly straight colour bands. 865 grams total, 11-13.8 cm (4 3/8 - 5 3/8 in.). [6, No Reserve] Ex Mineral I](https://p1.liveauctioneers.com/1191/415806/231335302_1_x.jpg?height=280&quality=70&sharpen=true&version=1777479005&width=280)
Est. £20-£30
TimeLine Auctions Ltd.Harwich, Essex
Est. $585-$760
BidhausNew York, NY
Est. $247-$321
BidhausNew York, NY
Est. $2,000-$3,000
Berkeley Auction GalleryScotch Plains, NJ
Est. $585-$760
BidhausNew York, NY
Est. $351-$456
BidhausNew York, NY
Est. $4,000-$5,000
Berkeley Auction GalleryScotch Plains, NJ
Est. $429-$557
BidhausNew York, NY
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