PJ Joseph

Welcome! I’m P.J. Joseph—a trained gemologist with over 40 years of experience in the fascinating world of gemstones. My journey blends scientific precision with storytelling, as I’ve spent decades educating others through writing. Whether you're a curious beginner or a seasoned collector, I’m here to share insights that empower ethical, informed choices in jewelry and gemology. I hold a professional diploma (DgemG) in gemology from the Deutsche Gemmologische Gesellschaft e.V., Idar-Oberstein, Germany, and the Gemological Institute of India, Mumbai, India.

François-Paul Journe and Dominique Gauthier at F.P.Journe Le Restaurant Geneva

F.P.Journe Le Restaurant Geneva | Fine Dining Meets Watchmaking

Fine Dining Europe, Geneva Restaurants, Horology & Lifestyle, Luxury Dining /

Summary F.P.Journe Le Restaurant Geneva is a unique meeting of haute horlogerie and haute cuisine.Founded by François-Paul Journe, the master watchmaker, and Dominique Gauthier, the Michelin-starred chef, it redefines luxury dining in Geneva’s Rue du Rhône.Every detail reflects precision, passion, and craftsmanship — values that link the art of timekeeping and the art of cooking. […]

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Sotheby’s Bespoke High Jewelry Service artisan crafting a diamond masterpiece

Sotheby’s Bespoke High Jewelry Service

Gemstones, High Jewelry, Jewelry, Luxury Brands, Sotheby’s /

Summary Sotheby’s Bespoke High Jewelry Service lets you design a jewel that tells your story.Each creation combines expert craftsmanship, rare gemstones, and centuries of heritage to deliver your own masterpiece. Sotheby’s Bespoke High Jewelry Service – Create Your Own Masterpiece Sotheby’s Bespoke High Jewelry Service transforms ideas into timeless jewels.With more than 280 years of

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Artisan crafting coral jewelry using hand tools.

Coral Special Report 2025: Preserving Coral Craftsmanship

CIBJO News and Updates, Coral and Organic Gems, Gemstone Industry Reports, Jewelry Craftsmanship, Sustainable Jewelry Practices /

Summary The 2025 CIBJO Coral Report, led by Vincenzo Liverino, calls for preserving coral craftsmanship, protecting cultural heritage, and training new artisans. It highlights coral’s artistic and environmental value, urging the jewelry trade to sustain this centuries-old skill. The Coral Report 2025 Focus With the 2025 CIBJO Congress opening in Paris on October 27, the

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Diamond yield comparison between rough and polished diamond

Diamond Yield: How Much Rough Becomes Polished

Diamond Knowledge, Gemology, Rough Diamonds /

SummaryDiamond yield shows how much rough stone becomes a polished gem. Understanding diamond yield helps you estimate final weight, maximize value, and avoid mistakes. Introduction Understanding diamond yield is key when buying or cutting rough diamonds. Yield is the percentage of a rough stone that turns into a polished diamond. A 10-carat rough rarely becomes

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Vintage Art Deco and Retro Jewellery Collection by Beth Bernstein

Modern Guide to Vintage Jewellery – Beth Bernstein

Gemology, Jewellery History, Vintage Jewellery /

SummaryExplore Beth Bernstein’s Modern Guide to Vintage Jewellery to learn how to identify gemstones, styles, and collectible pieces from the 1930s to the 1980s. Perfect for collectors and enthusiasts. Beth Bernstein is a jewellery historian, author, journalist, and former designer. Her book Modern Guide to Vintage Jewellery explores collectible jewellery from the 1930s to the

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Black Opal Direct Lightning Ridge opal

Black Opal Direct: Your Guide to Lightning Ridge Opals

Australian Gems, Gemstones, Jewelry, Opals /

SummaryBlack Opal Direct offers authentic Lightning Ridge opals. The Australian company provides rough and polished stones, custom jewelry design, and educational resources, including blockchain-based Provenance Proofs for high-value gems. Black Opal Direct is an Australian company specializing in Lightning Ridge opals. Founded in 1961 by Jurgen Thomas, it is now managed by his son Justin

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Brazilian colored gemstones for jewelry designers

Brazilian Colored Gemstones: 2025 Jewelry Designer Guide

Brazil, Gemstones, Jewelry, Jewelry Design /

Summary Discover the top Brazilian colored gemstones in this 2025 guide for jewelry designers. Learn about emeralds, Paraíba tourmalines, aquamarines, and quartz gems. Explore their origins, price ranges, uses in jewelry, and market insights. This guide blends practical tips for designers with proven results and authoritative references, helping you create unique and valuable gemstone jewelry.

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Deloitte Swiss Watch Industry Study 2025 showing Swiss luxury watches and data charts.

Deloitte Swiss Watch Industry Study 2025: Insights & Outlook

Industry Reports, Luxury Watches, Market Trends, Swiss Watchmaking /

Summary The Deloitte Swiss Watch Industry Study 2025 examines the pulse of Swiss watchmaking through data from 111 senior executives and 6,500 global consumers.It tracks shifts such as the pre-owned market boom, the neo-vintage trend, and India’s fast-growing watch demand.If you follow global watch trade or luxury retail, this study offers a clear picture of

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Oscar Heyman 2025 Holiday Catalog featuring handcrafted gemstone masterpieces.

Oscar Heyman 2025 Holiday Catalog: Gemstone Masterpieces

Gemstones, Jewelry, Luxury Brands, New Launches /

Summary The Oscar Heyman 2025 Holiday Catalog highlights the brand’s mastery in colored gemstone jewelry. Additionally, it features over 100 unique pieces handcrafted in its Madison Avenue workshop. Printed copies were sent to partner retailers across the U.S., and now the digital edition is available on the Oscar Heyman website. A New Chapter in American

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