metamorphic (Lapis) and sedimentary/igneous assoc. (Moss Agate)

Lapis Lazuli (blue bead) and Moss Agate (green heart)

Lapis Lazuli (lazurite-based rock) and Moss Agate (SiO2 with manganese/iron inclusions)

Lapis: Hardness 5-5.5, deep blue with gold pyrite and white calcite, greasy/vitreous luster. Moss Agate: Hardness 6.5-7, translucent with green dendritic inclusions, waxy/vitreous luster.

Identified March 13, 2026More metamorphic (lapis) and sedimentary/igneous assoc. (moss agate) →

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Physical properties

Lapis: Hardness 5-5.5, deep blue with gold pyrite and white calcite, greasy/vitreous luster. Moss Agate: Hardness 6.5-7, translucent with green dendritic inclusions, waxy/vitreous luster.

Formation & geological history

Lapis forms through contact metamorphism of limestone. Moss Agate forms in volcanic rock cavities from silica-rich groundwater over millions of years.

Uses & applications

Primary use in jewelry, decorative carvings, and as a semi-precious gemstone. Historical use of Lapis as 'ultramarine' pigment in Renaissance paintings.

Geological facts

Lapis was highly prized by Ancient Egyptians for amulets and burial masks (including King Tut's). Moss agate is technically not a true agate because it lacks concentric banding.

Field identification & locations

Identify Lapis by its distinctive pyrite 'gold' flecks. Identify Moss Agate by its 'moss-like' green filament inclusions. Found in Afghanistan (Lapis) and India/USA/Brazil (Agate).

Other metamorphic (lapis) and sedimentary/igneous assoc. (moss agate) specimens

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Green Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe)

sedimentary

Blue Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions

sedimentary

Green Moss Agate / Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron and Manganese inclusions

sedimentary

Green Moss Agate

Silicon Dioxide with inclusions (SiO2)

sedimentary

Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with dendritic inclusions

mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

mineral