Gilson Lab Opals - White Square Coin - 3mm (0) No Reviews yet Pinit SKU: GLOSQUARECOIN_WHITE_3MM $1.80 / Piece Quantity discounts available PiecePrice $2.25 / Each Save 20% Quantity -+ Add to Cart Details Our 3mm square coin opals are are flat & polished on both side and the edges are rounded and polished. These stones are perfect for geometric patterns... DetailsApplyDetailsOur 3mm square coin opals are are flat & polished on both side and the edges are rounded and polished. These stones are perfect for geometric patterns.Sold by the piece.See MoreSee Less Reviews 0 ApplyRatings & ReviewsNo reviews availableBe the first to Write a Review