Size:4"-5"  |  Color:Purple Due to the natural characteristics of agate, coasters vary in size, pattern, symmetry, shape and color. In addition, coasters are either solid or have a geode center. Agate is one of the world's most-prized minerals. It is a microcrystalline variety of quartz and is typically formed in volcanic rock. Its natural hardness makes it perfect for jewelry, carvings, bookends, coasters and clocks. Our magnificent Agate coaster sets, each comprised of four coasters, feature high quality and hand-polished Brazilian stones.
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