They can occur as individual crystals or as aggregates

6 grams and measuring 50x32x27mm

and is still important in modern industries

Size:  4x2mm - 10x5mm

Lapis Lazuli Pendant | 925 Sterling Silver | Thailand Quartz They can occur as individualLapis lazuli is a vivid blue metamorphic rock and a gemstone that has been prized for its intense color and historical significance for thousands of years. It's composed of lazurite (for the blue color), calcite, sodalite, and pyrite. It is the presence of pyrite that causes the gold colored flecks or veins in the stone. Lapis lazuli has a moderate hardness, typically ranging from 5 to 5. 5 on the Mohs scale. High quality lapis lazuli has been