Smithsonian Handbook of Gemstones Agua Nueva Agate The slab also has a

The slab also has a small opening near the middle

This is a polished specimen featuring yellow agate with a small section of orange

Handy Display Tray

This specimen

It features interesting patterns of black and earthy brown jasper

Smithsonian Handbook of Gemstones Agua Nueva Agate The slab also has aBy Cally Hall From the back cover: Published in association with America's preeminent authority, the Smithsonian Institution. DK's Smithsonian Handbook of Gemstones is packed with more than 800 vivid full color photographs of more than 130 varieties of cut and uncut stones, organic gemstones, and precious metals. With authoritative text, clear photography, and a systematic approach, this concise guide to identification enables you to recognize each