・More than 180 grains per row ・1 grain size・・・about 2.5× 2.5× 1.5mm ・Hole size: estimated around 0.5mm ・Color: lapis lazuli, dark blue. There are spots where the whitish part (calcite), blue color, and black color of the raw stone can be seen. opaque stone. ・Mineral name: lazurite ・Gem name: lapis lazuli