Special grade product: 緑, 黄緑色, with some cracks and impurities, 半透明の, and the weight is above 50kg. 一級品: アクアマリン, ライトグリーン, 黄緑色, with some cracks and impurities, 半透明の, and the weight is more than 10kg. Second grade product: アクアマリン, ライトグリーン, 亀裂なし, a little impurity, and a block weight above 5 kg. 三番目 […]
