Lapis Lazuli (Lazurite-bearing rock)

Lapis Lazuli is an ancient gemstone cherished for its intense, celestial blue color, often speckled with golden pyrite inclusions. For millennia, it has been a symbol of royalty, wisdom, and truth across various cultures, from ancient Egypt to the Renaissance, where it was ground into the precious pigment ultramarine. Its deep color and historical significance make it a prized material in jewelry and ornamental art.

Mohs Hardness

5.0-5.5

Origin

Afghanistan, Russia, Chile, Myanmar, USA

Market Price Range

Commercial Grade: $1-5 per carat. Mid Grade (good color, some calcite): $5-20 per carat. High Grade (intense blue, minimal calcite): $20-100+ per carat. Finished jewelry pieces can range from $50 to several thousand dollars depending on quality and craftsmanship.

Detailed Description

Lapis Lazuli is technically a metamorphic rock composed of multiple minerals, primarily Lazurite, which provides its signature blue hue, along with Calcite (white veins), Sodalite (blue), and Pyrite (golden flecks). It is classified into several grades based on color intensity and the amount of Calcite and Pyrite. 'Persian' or 'Afghan' quality is the finest, featuring a deep, uniform, violet-blue color with minimal veins and finely dusted Pyrite. Historically, Lapis Lazuli was treasured by ancient civilizations. In Egypt, it was used for amulets, scarabs, and was famously inlaid in the funerary mask of Tutankhamun. During the Renaissance, it was more valuable than gold, as it was the sole source for the pigment ultramarine, used by master painters for the robes of the Virgin Mary. When collecting, one should look for intense, even color, minimal Calcite, and attractive Pyrite speckles. Untreated, high-quality stones are the most valuable.

Identification Methods

Color Check: Genuine Lapis has a deep, intense blue, often with violet or greenish tints, not a flat, uniform artificial blue.

Pyrite & Calcite Check: Look for naturally scattered, metallic golden specks (Pyrite) and white streaks (Calcite). Fakes often have too uniform or unnaturally glittery specks.

Hardness Test: With a Mohs hardness of 5-5.5, it can be scratched by harder materials like quartz but should not be easily scratched by a knife.

Acetone Test: Dab a cotton swab with acetone and rub a small area. Dyed stones will often bleed color onto the swab.

Specific Gravity: It has a specific gravity of 2.7 to 2.9, which is denser than many imitations like dyed Sodalite or plastic.

Market Information

The market for Lapis Lazuli remains strong, driven by demand in both jewelry and collectibles. Prices in 2024-2026 reflect a premium for high-quality, untreated stones from Afghanistan, which exhibit a deep royal blue with fine pyrite dusting. Commercial-grade material is more affordable and widely used. The market sees a stable interest from consumers who value its rich history and unique aesthetic, ensuring its continued relevance in the gemstone world.