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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...

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 ...

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...

Engagement Ring Styles vs. Settings: What’s the Difference?

Choosing an engagement ring is about more than finding a beautiful diamond. The way that diamond is framed, secured and presented can completely change the character of the finished ring. One of th...

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...

Engagement Ring Guide: How to Design a Custom Lab-Grown Engagement Ring in Hong Kong

Designing an engagement ring should feel personal from the very beginning. Instead of choosing a finished ring from a display case, a bespoke engagement ring in Hong Kong allows you to start with t...

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 ...

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...

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...

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...