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Search Results - Gemstones, sapphire

your search of 'Gemstones, sapphire' has 75 results.

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Influential Australian gemmologists: Corinne Sutherland, Geoff Tombs and Grant Hamid in 1980.

Gemstones
Gemmologists who changed the game: Serving an industry amid constantly evolution

Over the past six issues of Jeweller magazine, we’ve taken a closer look at the many gemmologists who have transformed the industry over the years. Read more »

Gemstones
Gemmologists who changed the game: Donald B. Hoover

Dr. Donald B. Hoover was a distinguished figure in the field of gemmology. He was born on June 17, 1930, and passed away on January 22, 2023, at the age of 92. Read more »

Gemstones
Gemmologists who changed the game: Jack Stanley Taylor

The latest addition to this series of gemmologists who left their mark on the world of gemstones and jewellery is a man who likely contributed to the education of many readers of Jeweller. Read more »

Gemstones
Tools of the trade: Part 1

Like many scientific practices, gemmology relies on the use of various specialty instruments to measure and assess properties of gemstones. Read more »
Above: Piaget; Stephen Silver Fine Jewelry; Dior Below: Selim Mouzannar; Sunita Nahata

Gemstones
Garnets Part I: Pyrope, Almandine, Spessartine

Historically, garnets have played a significant role in the world of gems. They have adorned the necks of high society ranging from Egyptian pharaohs to Victorian-era royalty and beyond. Read more »
Inset jewellery: Boucheron, Sapphires: Sapphire Dreams

Gemstones
The Gem Quarter: The distinctively elegant gemstones of Australia

Australia is home to some of the world’s oldest minerals and rocks, many of which are some of the most sought-after gemstones by enthusiasts and collectors from every corner of the globe. Read more »
Gemological Institute of Ratnapura director Chamila Suranga inspects the 310kg corundum. <b>Image:</b> Reuters – Dinuka Liyanawatte

News
"Queen of Asia" sapphire weighing 310 kilograms on display in Sri Lanka

A 310-kilogram natural blue sapphire has been placed on display in Sri Lanka in what could be the largest piece discovered to date, with an estimated value of more than $100 million. Read more »

Gemstones
The Gem Quarter: Sunset magic – orange & yellow gemstones

Jeweller explores the captivating hues of orange and yellow gemstones, from the rich gold of topaz to mandarin garnet, fresh citrine, and smouldering fire opal. Read more »

Feature Stories
The Gem Quarter: Every hue of green and blue

Jeweller discovers the chemical and structural causes of colour in captivating natural blue and green gemstones, from Ceylon sapphires to imperial jade. Read more »
Learn about how the art of gemstone cutting can transform a crystal and bring out its best qualities, from colour to size and sparkle.

Feature Stories
Coloured gemstones: A cut above

Justin K Prim explores the fascinating variety of coloured gemstone cuts and how each one enhances the rough crystal to its full potential. Read more »

Gemstones
The Gem Quarter: Understanding colour - Candy to Crimson

Jeweller explores the vivid spectrum of red, pink and purple gemstones, from chemical quirks and crystal lattice deviations to exotic origins and mystical tales. Read more »
Above: Amethyst rough; Bulgari collier Below: Emerald rough

Feature Stories
Mine to market: Evolution of the rough trade

Sir-Faraz ‘Farooq’ Hashmi explores how cultural and geographic differences shape the journey of colour gemstone rough from the distant corners of Earth to the jeweller’s bench. Read more »
Image from L to R: Raw synthetic moissanite material before being grown. Source: Alibaba | Cut and set moissanite Source: Diamond Boutique

Gemstones
Synthetic Moissanite

Synthetic moissanite is marketed by the jewellery industry as an affordable diamond alternative. Named after Nobel Prize winner and French chemist Henri Moissan, moissanite in its natural form is a rare mineral, silicon carbide. Read more »
L to R: Blue sapphire with asterism; yellow topaz with chatoyancy against background of assorted gemstones.

Gemstones
A guide to asterism and chatoyancy

The beauty of gemstones resides in the optical properties associated with light, be it light reflected within the body of the gem or from the gem’s surface. Read more »

Feature Stories
Cracking the colour gemstone code

Coloured gemstones are firing up the jewellery industry. ARABELLA RODEN explores the rainbow of opportunities presented by this increasingly popular category. Read more »

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