Figure 1. This alexandrite cabochon appears brownish green in fluorescent light (left) and brownish purple in incandescent light (right). The cabochon shows chatoyancy under both forms of illumination ...

A cut gemstone with intense chatoyancy that originated from Sri Lanka was determined to be a member of the scapolite solid-solution series. Indices of refraction and unit-cell dimensions were found as ...

In a groundbreaking moment for the global gemstone industry, Sri Lanka has unveiled the world’s first known Cat’s Eye Xenotime, a remarkably rare mineral displaying a striking chatoyancy. Discovered ...

In a groundbreaking moment for the global gemstone industry, Sri Lanka has unveiled the world’s first known Cat’s Eye Xenotime, a remarkably rare mineral displaying a striking chatoyancy. Discovered ...

In a groundbreaking moment for the global gemstone industry, Sri Lanka has unveiled the world’s first known Cat’s Eye Xenotime, a remarkably rare mineral displaying a striking chatoyancy. Discovered ...