Agate is a banded chalcedony variety of quartz identified by concentric or parallel growth bands and waxy lustre.

Botswana agate is a finely banded agate variety known for subtle grey-brown and pinkish tones.

Cat's-eye moonstone is moonstone-type feldspar showing a chatoyant band in suitable cabochon orientation.

Cat's-eye quartz is quartz showing a chatoyant eye caused by aligned fibrous or needle inclusions.

Chrysanthemum stone is a patterned ornamental rock with white radiating mineral growths in dark matrix.

Dendritic agate is chalcedony containing tree-like manganese or iron dendritic inclusions.

Ghost quartz is quartz containing internal phantom crystal outlines created during interrupted growth.

Grey chalcedony is a neutral-toned chalcedony variety used in cabochons, beads, and carvings.

Labradorite is a plagioclase feldspar known for labradorescence caused by light interference in lamellar structures.

Meteorite stone is a trade category for extraterrestrial material used in jewelry and collector pieces.

Mettle stone is handled as a trade-name decorative material requiring supplier-level composition disclosure.

Obsidian is a natural volcanic glass formed by rapid cooling of silica-rich lava.

Picasso jasper is a trade-name patterned decorative rock used for graphic line-based lapidary designs.

Tahitian pearl is a premium dark saltwater cultured pearl category.

Zebra jasper is a patterned ornamental stone category defined by high-contrast striping.

Zoisite is an orthorhombic sorosilicate species encompassing several gem varieties.