Sard is a yellow to brown agate. Agate is a cryptocrystalline (crystals too small to be seen even by a microscope) variety of quartz. These varieties are divided more by character than by color. These different variatites are often used as semi-precious gemstones and for decorative purposes.

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Size: 1972px × 1572px
Location: Colorado
Photo credit: © Historic Illustrations / Alamy / Afripics
License: Royalty Free
Model Released: No

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