Don’t Miss This: The Sun Will Morph Into a Diamond Ring on August 21

On Monday, August 21, skygazers from Salem, Ore., to Charleston, S.C., will see a rare total solar eclipse and — for just a brief moment — a fantastical celestial display that looks remarkably like a diamond ring. The “Diamond Ring Effect,” which was first explained by Francis Baily in 1836, occurs when the moon completely masks out the sun during …

Found in Only One Location on Earth, Tanzanite Celebrates Its 50th Anniversary

It was exactly 50 years ago when a prospector named Manuel d’Souza got his first look at a cluster of intense blue crystals that had been discovered by a Maasai tribesman in the foothills of Mount Kilimanjaro in Tanzania. At first glance, the crystals appeared to be sapphires. But a hardness test quickly ruled that out. According to one published …

MIT’s ‘Living Jewelry’ Is the High-Tech Version of Mexico’s Maquech Beetle

With a nod to the Maquech Brooch — a live beetle jewelry accessory famous on Mexico’s Yucatan Peninsula — students at MIT have invented tiny robot crawlers that can move across garments as “shape-changing and pattern-changing jewelry.” Developed by the MIT Media Lab, “Project Kino” employs palm-sized robots that affix to clothing using magnets. The robots ride on wheels and …

Russian Mining Giant Trumpets Its Big-Diamond Cutting Prowess With the Unveiling of the 51-Carat ‘Dynasty’

Russian mining giant Alrosa trumpeted its big-diamond cutting prowess with the unveiling of The Dynasty, a 51.38-carat round brilliant-cut sparkler. The 57-facet, D-color, VVS1 gem is the largest of five polished diamonds all culled from The Romanovs, a 179-carat rough stone recovered from the Nyurbinskaya kimberlite pipe in the Russian Republic of Sakha (Yakutia) in 2015. The cutting and polishing …

Spinel — the New August Birthstone — Has Been Fooling Royalty for Centuries

Fourteen months ago, the American Gem Trade Association (AGTA) and Jewelers of America (JA) announced that spinel — the great imposter — would be joining peridot as an official birthstone for the month of August. It was only the third time in the past 105 years that the modern birthstone list had been amended. The industry associations noted at the …

Ultra-Rare 2.11-Carat Fancy Red Diamond Headlines 2017 Argyle Pink Diamonds Tender

An ultra-rare, 2.11-carat, fancy red diamond known as the Argyle Everglow headlines the 2017 Argyle Pink Diamonds Tender – an annual showcase of the rarest diamonds from Rio Tinto’s Argyle mine in Western Australia. The Argyle Everglow, which earned a grade of fancy red VS2 from the Gemological Institute of America (GIA), is the largest fancy red diamond ever to …