Dion Abadi·23h agoBuying a Cameo at Auction? Know Shell, Stone and MoldedCameos are a favorite of mine at jewelry auctions. A good one is a small carving done by hand, and you can still find fine examples at fair…
InOperations Research BitbyDiogo Ribeiro·1d agoGame and Auction Theory for Data ScientistsPart 5 of 6: Auction Formats, Bidding and Revenue Equivalence, how to bid when the price depends on what others bid, why the format of an…
Dion Abadi·1d agoBuying a Brooch at Auction? Check the Pin and the CatchBrooches are some of the best values I see at jewelry auctions. Fewer people bid on them than on rings or necklaces, so a well-made piece…
Dion Abadi·2d agoBuying Opals at Auction? Check for Cracks and CrazingOpals can look incredible in a catalog photo. That play of color catches the light and makes people raise their paddles fast. The quiet…
Dion Abadi·3d agoBuying Earrings at Auction? Make Sure They’re a True PairEarrings look simple in a catalog photo. Two stones, two posts, done. But a mismatched pair is one of the most common quiet problems I see…
