list of precious gemstones in order of value,list of precious stones in order of value,blue colour semi precious stone,most precious gemstones in order,large semi precious stones
Blue green semi precious stone is an ancient jade. The crystals of loose precious gemstones are generally barrel-shaped or columnar and plate-shaped. The vertical direction of mineral crystals of purple semi precious gemstones is called C-axis. Precious stones can be cut into facets with facets X or facets Z. When we cut jasper semi precious stone, we need to do everything possible to make the table top perpendicular to the C axis.
