Lapis Lazuli Information

Lapis lazuli, with its deep blue hue adorned with specks of pyrite and occasional veining of calcite, is a gemstone of ancient allure and mystical charm. Revered for millennia for its rich color and historical significance, lapis lazuli continues to captivate with its timeless beauty.

Facts About Lapis Lazuli:

• Mineral Type: Lapis lazuli is not a single mineral but a rock composed primarily of lazurite, along with calcite, pyrite, and minor amounts of other minerals. Lazurite is a silicate mineral containing sulfur.
• Locations Found: The most significant deposits of lapis lazuli are located in Afghanistan, where it has been mined for over 6,000 years. Other notable sources include Chile, Russia, Myanmar, and Pakistan.
• Mohs Hardness: Lapis lazuli has a hardness of 5 to 5.5 on the Mohs scale, making it relatively soft compared to other gemstones. This softness can lead to susceptibility to scratching and abrasion.
• Common Treatments: Lapis lazuli is usually not treated; however, sometimes it may be enhanced with wax or resin to improve its appearance or durability.
• Refractive Index: The refractive index of lapis lazuli ranges from approximately 1.50 to 1.55, contributing to its luster and semi-translucent appearance.
• Birefringence: Lapis lazuli exhibits low birefringence, typically around 0.009, which is characteristic of lazurite and other silicate minerals.
• Specific Gravity: The specific gravity of lapis lazuli ranges between 2.7 and 2.9, indicating its density relative to water.

Lapis lazuli has been prized throughout history for its deep blue color reminiscent of the night sky and its association with wisdom, truth, and spiritual enlightenment. Used extensively in ancient Egypt for jewelry, amulets, and even ground into powder for pigment (ultramarine), lapis lazuli remains a symbol of prestige and artistic expression. Today, it continues to be used in jewelry, carvings, and decorative objects, where its vivid color and historical significance add a touch of mystery and elegance.