Lazulite

Carat weight is significant for faceted lazulite because crystals suitable for cutting are usually small. Transparent, well-colored stones above 1–2 carats are rare and command substantial premiums among collectors. Cabochon material can be larger but is generally more included.

Color is the main value driver. The finest lazulite shows a vivid, saturated medium to dark blue—often described as 'azure'—with minimal gray or green. Stones that are too dark, too pale or strongly greenish/grayish are less desirable, though some collectors appreciate unique hues.

Lazulite often contains inclusions, fractures and zoning. Faceted stones with good transparency and few noticeable inclusions are scarce and more valuable, particularly in larger sizes. Heavily included material is usually cut en cabochon or kept as mineral specimens.

Cutting lazulite is challenging due to cleavage and brittleness. Well-cut stones balance brilliance and color while minimizing the risk of breakage and visible fractures. Mixed or step cuts are typical. Poor cutting can leave stones lifeless or overly dark, reducing their appeal.

Lazulite occurs in metamorphic and pegmatitic environments, with notable localities in Canada, Austria, Brazil and the United States. However, gem-quality crystals are uncommon, and production is small-scale, often by specimen miners rather than dedicated gemstone operations.

Demand is niche and centered on advanced collectors and connoisseurs of rare gemstones. Lazulite is rarely seen in mainstream jewelry, and most consumers are unfamiliar with it.

Recent Trends: niche but stable collector interest, with fine, well-documented stones achieving strong prices through specialist dealers and auctions.