A colourless brilliant-cut stone arrives without documentation. Is it diamond, synthetic moissanite or cubic zirconia? Follow the evidence through magnification, optical properties, thermal testing and advanced laboratory screening.
For thousands of years, jade occupied an exceptional place in Chinese culture. From mysterious Liangzhu bi discs and cong placed in elite burials to later associations with virtue and immortality, discover the documented history behind one of the world's most spiritually significant gemstone traditions.
Can you identify whether an unknown gemstone is natural, synthetic or an imitation? Work through a professional gemmological investigation step by step and learn why reliable identification comes from converging evidence—not one gemstone tester.
Discover blue sapphire from a gemmologist’s perspective: its geological formation, iron-titanium colour mechanism, refractive index, spectroscopy, inclusions, treatments, synthetics and diagnostic identification features.
Why did the ancient Greeks associate amethyst with sobriety and wine? Explore the documented history of amethyst in Greece and Rome, its use in engraved gems, its connection with intoxication, and the surprising truth behind the famous Dionysus and Amethyst legend.
Natural, synthetic, treated, imitation and composite gemstones are fundamentally different categories. Learn what each term actually means, how laboratory-grown gems are created, and how gemmologists distinguish them.
Lapis lazuli was far more than a beautiful blue material in Ancient Egypt. Archaeological objects reveal its use in jewellery, divine amulets and funerary contexts. Explore what evidence actually tells us about its symbolism, religious significance and extraordinary journey to Egypt.
Can a laboratory really determine whether a sapphire came from Sri Lanka, Madagascar or Myanmar? Discover how inclusions, spectroscopy, trace-element chemistry and known-origin reference stones are combined—and why some results must remain inconclusive.
Dalmatian Jasper is known for its distinctive black-spotted appearance and modern associations with grounding, joy and spiritual balance. Discover its true geology, symbolic meaning and responsible ways to use Dalmatian Stone in meditation and reflection.
Dream Amethyst, or Chevron Amethyst, combines striking purple and white quartz patterns with a rich spiritual tradition. Explore its mineralogy, symbolism and associations with meditation, intuition, dreams and inner reflection.
