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Fine Jewellery, Trends & Advice

Explore our articles on trends, care tips and inspiration to help you find the perfect piece.

Alexandrite: The Rare Gemstone That Changes Colour

Bonnot Paris · The Precious Stone Journal 2026 Alexandrite Green by day, red by night. Why it changes colour, where it comes from, what it really costs — and why we almost never have it in our display cases. By François Deprez, founder · Gemstone guide · 8 min · September 2026 Contents 01One stone, two […]

François DeprezApril 29, 2026

Emerald vs Tsavorite: How to Choose Between These Two Green Gemstones?

Bonnot Paris · The Precious Stones Journal 2026 Emerald or tsavorite Two greens, two mineral families, and two opposing approaches. Colour, transparency, treatments, price, size limit — the complete comparison, pulling no punches for either. By François Deprez, founder · Comparison · 8 min · September 2026 Contents 01Two families 02The comparison 03The […]

François DeprezApril 29, 2026

Emerald: A Complete Guide to Origin, Price, Quality and Meaning

Bonnot Paris · The Journal of Precious Stones 2026 The emerald The only green with no equivalent, and the only major gemstone whose flaws define its identity. The jardin, oiling, origins, and the setting it demands. By François Deprez, founder · Gemstone guide · 9 min · September 2026 Contents 01What an emerald is […]

Bonnot ParisApril 29, 2026

Engagement Rings: The 2026 Trends That Will Define the Year

Bonnot Paris · The Precious Stone Journal 2026 Engagement Rings: 2026 Trends Six rising colours, the return of rectangular cuts and yellow gold, floral versus Art Deco — and what is losing momentum. What we truly see coming through the workshop. By François Deprez, founder · Trends · 8 min […]

François DeprezApril 29, 2026

Guide to Precious Stones

Bonnot Paris · The Precious Stones Journal 2026 The guide to precious stones What the term truly means, the three criteria that determine a choice, and each family in turn — with what each requires and what it makes possible. By François Deprez, founder · Guide · 10 min · September […]

François DeprezApril 29, 2026

Gemstone Cuts: Shapes & How to Choose the Right One

Bonnot Paris · The Precious Stone Journal 2026 The art of gemstone cutting What the cut changes about brilliance and price, the main shapes and who they suit, and the carat trap no one ever explains. By François Deprez, founder · Complete Guide · 7 min · Updated […]

Bonnot ParisApril 29, 2026

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