訊息
Macle Diamonds: The Hidden Crystal Architecture Behind Nature’s Triangular Diamonds
A Diamond Shape That Tells a Deeper Story Most people picture a diamond as a sparkling octahedron in its natural state or a precisely faceted gemstone ready for jewellery. Yet nature produces crys...
閱讀更多
Can Infrared Spectroscopy Reveal Whether a Sapphire Has Been Heat-Treated?
A sapphire's beauty is immediately visible. Its treatment history, however, may require considerably more sophisticated investigation. Heat treatment is widely used in the gemstone industry to modi...
閱讀更多
Enumerating Diamond Cuts: How Mathematics Could Reveal the Full Design Space of Diamond Faceting
When we look at a diamond, we usually see a finished object: a polished stone defined by its outline, proportions, symmetry and play of light. But before a diamond becomes a finished jewel, it can ...
閱讀更多
Red & Orange Spinel from Myanmar and Vietnam: How Science Reveals Colour, Origin and Rarity
Among the world’s exceptional coloured gemstones, spinel has undergone a remarkable transformation in perception. Once frequently mistaken for ruby in historic jewellery, fine spinel is now appreci...
閱讀更多
Tucson 2026 Gemstone Trends: The Colors, Stones & Cutting Styles Defining Luxury Jewellery
Every February, the global gemstone industry gathers in Tucson, Arizona, for one of the most important annual meetings of gem dealers, cutters, designers and collectors. The 2026 Tucson shows offer...
閱讀更多
CVD vs HPHT Lab-Grown Diamonds: What’s the Difference?
If you are shopping for a lab-grown diamond, you will eventually encounter two terms: CVD and HPHT. At first, they can sound like two completely different types of gemstone. They are not. Both CVD ...
閱讀更多
GIA vs IGI Lab-Grown Diamond Certificates: What Hong Kong Buyers Need to Know
If you are searching for a GIA certified lab grown diamond in Hong Kong, the certificate can sometimes feel almost as important as the diamond itself. But a grading report is not simply a stamp tha...
閱讀更多
Lab-Grown Diamond Prices in Hong Kong (2026 Guide): How to Save Up to 50%
If you are shopping for a diamond in Hong Kong, one of the first questions is usually simple: how much should I actually pay? The answer can vary dramatically depending on whether you choose a natu...
閱讀更多
Dark Red Tantalite Crystal in Greenish Blue Sapphire: A Striking World Hidden Inside a Gem
A sapphire can look beautifully simple from the outside: a blue or green bodycolour, a polished surface and the clean geometry of a finely cut gemstone. Under magnification, however, that same ston...
閱讀更多
The Transformation of Diamond Cut Quality Grading: From Proportions to Human Perception
Diamond cut grading has undergone one of the most significant transformations in modern gemology. Once judged almost entirely by angles and proportions, today's leading laboratories recognize that ...
閱讀更多