Rock & Mineral Encyclopedia

Search and identify 1,000+ rocks, minerals, crystals, and gemstones — with properties, formation, colors, hardness, and how to tell them apart.

Yellow Agate

A yellow to golden banded chalcedony colored by iron, ranging from natural honey tones to dyed commercial stones.

Yellow to golden volcanic glass; natural examples owe their color to iron, though much bright yellow obsidian on the market is manufactured glass.

A warm golden to amber translucent chalcedony agate whose color and glow resemble honey, sometimes with banding.

A warm golden-to-amber variety of calcite, a soft calcium carbonate mineral valued for its honeyed glow and easy carving.

A warm golden-to-amber opal ranging from translucent common opal to precious stones that flash play-of-color over a honey body.

A golden-toned opal ranging from translucent common opal to precious stones flashing color against a warm yellow body.

The golden-yellow variety of quartz, ranging from pale lemon to deep madeira amber, often produced by heating amethyst.