Black Rounds - 4mm - Gilson Opals (0) No Reviews yet Pinit SKU: GLOROUND_BLACK_4MM $3.60 / Piece Quantity discounts available PiecePrice Quantity -+ Add to Cart Details Our black 4mm rounds are opaque, flash lots of red, and have a mirror finish. These stones are very popular, versatile, and affordable. Sold by th... DetailsApplyDetailsOur black 4mm rounds are opaque, flash lots of red, and have a mirror finish. These stones are very popular, versatile, and affordable. Sold by the piece.See MoreSee Less Reviews 0 ApplyRatings & ReviewsNo reviews availableBe the first to Write a Review