zweerオランダNewon Catawiki2Objects in auctionPrivateVerified sellerBuy safely – this seller has been identity-checkedLotsAll lots (2)カラー宝石オークション (2)In auction now Objects from zweer All auctionsOpal - 8.76 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 白と色の遊び White Opal - 9.30 ct - Instituto Gemólogico Español (IGE) - 色のゲーム