In 1902, a gem collector in Sri Lanka noticed a dark stone among river pebbles. At first, it looked ordinary. But a closer look showed it was different. Scientists named it Serendibite, after “Serendib,” an old name for Sri Lanka. This small stone became one of the rarest gems known. Few people see it. Fewer

Imagine a gem that never looks the same twice. Hold it in your hand and turn it. Green flashes from one angle, red-brown from another. Sometimes a golden light appears. This is andalusite, one of nature’s most unique stones. It is rare, hard to find in fine quality, and often overlooked. Yet those who know