Diamond Identification Guide
Distinguish real diamonds from Moissanite and CZ.
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Distinguish real diamonds from Moissanite and CZ.
Master the art of identifying tourmaline by its incredible color range, triangular cross-sections, and natural pleochroism.
Ruby or Spinel? Uncover the legendary history of these red gems. This expert guide dives into optical properties, crystal systems, and microscopic 'silk' inclusions to help you separate the world's most beautiful crimson stones.
Expert guide to identifying opal play-of-color patterns and verifying natural gemstones.
Learn the secrets of identifying natural amethyst. From detecting color zoning and inclusions to the 'cold touch' test, this guide helps you distinguish genuine purple quartz from common glass and synthetic fakes.