Alrosa sales of rough and polished diamonds in February 2021 increased 8% year-on-year to $372 million, including proceeds from rough diamond sales of $361 million (+5%), and polished diamond sales of $12…
Petra Diamonds announced that the 299.3-carat diamond recovered at the Cullinan diamond mine in January 2021 has been sold to Stargems DMCC for $12.18 million. This exceptional Type 11a white gem quality…
This Women’s Day, the Platinum Guild International (PGI) brand Platinum Evara will honour women leaders across different fields by undertaking an extensive digital campaign comprising several initiatives to activate the message: #SheLeadsWithHeart. The…
CIBJO has launched a new informational website, called “What is a diamond?” Its purpose is to inform consumers and members of the jewellery and gemstone industry about the precise terminology that should…
Akanksha Arora, CEO, Tribe Amrapali, talks about their updated and most popular collections and how the brand’s foresight of going online way back in 2015 gave them a competitive advantage during the…
An interesting tuft of light blue needles was recently observed in a polished modified cube of rock crystal quartz (figure 1). The needles nucleated on a nearly invisible quartz crystal with the…
Recently the authors examined a 4.8 cm tall pale blue sapphire crystal (figure 1) that featured numerous purple spinel crystals up to 8 mm in size on the surface (figure 2), a…
Numerous gem materials have been designated “trapiche” in the trade and in various publications. They generally describe a pattern consisting of a fixed non-transparent star in a transparent matrix, with the arms…
Recently examined in the Carlsbad laboratory was a 26.72 ct transparent violet modified cushion mixed-cut stone (figure 1). Standard gemological testing revealed a refractive index of 1.583–1.592 and a specific gravity of…
A white, non-nacreous baroque pearl weighing 15.53 ct and measuring 19.54 × 13.26 × 11.57 mm (figure 1) was recently submitted to GIA’s Carlsbad laboratory for examination. Information from previously observed non-nacreous…