Notable for its majestic blue velvet and intense royal purples, the first of December’s birthstones is named after the only country it can be found: Tanzania. Exceptional tanzanite can display three distinct colors in three crystal directions. (more…)
Perhaps the most popular and frequently purchased yellow gemstone, citrine is a variety of quartz, and a November birthstone. While it’s an attractive alternative for topaz as well as yellow sapphire, natural citrine is actually quite rare, and those without color zoning or visible inclusions are highly sought after. (more…)
One of November’s birthstones, topaz has the unique ability to show different colors in different crystal directions. Ancient civilizations believed that topaz gave them strength, long life, beauty, and intelligence. (more…)
Featuring one of the widest color ranges of any gem, tourmaline is one of October’s two birthstones. A favorite of mineral collectors everywhere, tourmalines come in all shapes, sizes, color saturations and tones – from expensive electric blues to affordable olive greens.
We’ve been wearing coral jewelry for at least 30,000 years – an impressive testament to its timeless appeal.
Coral comes in an array of colors: white, cream, various shades of red and orange, blue, a light grayish violet called “lavender” in the trade, and a light, vivid pink color sometimes referred to as “angel’s skin”. There is also black and golden coral. Red coral (sometimes called “ox blood” in the trade) has historically been the most expensive. Gem-quality coral has uniform color. (more…)
September’s birthstone, Sapphire, is one of the most beloved gemstones. Considered one of the “Big Three” (along with ruby and emerald), sapphire stepped into the spotlight with Princess Diana’s famous engagement ring, which Prince William then bestowed to Kate Middleton when he proposed in 2010. (more…)
Known to Egyptians as the “gem of the sun,” the yellowish green peridot has been treasured since the earliest times, and is the birthstone for August. It’s thought that this gemstone is 4.5 billion years old, as it’s found in meteorite remnants dating to the solar system’s birth.
If you’re shopping for August’s birthstone, our Peridot Buying Guide offers tips and advice on what to look for, particularly as it relates to cut, one of the most important factors in a peridot’s appearance. (more…)
In the past century, pearls have gone from some of the most expensive and rarest objects to jewelry that many of us can afford.
How this happened and what the future holds is a fascinating story. In part one of our series on cultured pearls we discussed how three Japanese men created techniques to produce the first akoya cultured pearls, which gave birth to the modern cultured pearl industry. Today, we dive into South Sea cultured pearls, Tahitian cultured pearls, and the rise of China as a leading cultured pearl producer.
Ready to set sail and learn about these treasures? (more…)
Buried deep in the Himalayan foothills of Afghanistan lies a bountiful supply of rich, deep green emerald, and the promise of seeing these beautiful rough gems lured Andy Lucas, GIA manager of Field Gemology in Carlsbad, to this scenic but beleaguered land.
Lucas travels around the world gathering details of the mine to market story for GIA education courses and its scientific publication, Gems & Gemology. And this time, his destination was the remote emerald mines of Panjshir Valley. The valley’s name means “five lions,” a tribute to five spiritual brothers who once lived there. When he arrived, he found a rugged land with spectacular vistas. (more…)
The color of love, anger, passion, fury, vibrant red ruby is July’s birthstone. It makes an ideal romantic gift, not only for those who celebrate July birthdays, but for all women. However, ruby can command the highest per-carat price of any colored gemstone. These stunning red gems are consistently breaking auction records, as demand for ruby continues to rise. (more…)
March’s aptly titled birthstone, aquamarine, grows in gorgeous crystals and sparkles like the ocean on a sun-kissed day. But do you know what to look for when shopping for aquamarine? (more…)
