Pezzottaite
Pezzottaite is a mineral species with the formula Cs(Be2Li)Al2(Si6O18). It is named after Dr. Federico Pezzotta from the Natural History Museum of Milan for his work on Madagascar’s granitic pegmatites.
Gem NotesGem Focus – February 2023 – Featuring Padparadscha: The most delicately colored corundum variety
Among these “fancy sapphires,” padparadscha, the delicate pure pink-orange variety, is the most popular and arguably the rarest.
*Gem Focus & Market Pulse (Free Subscriber)Gem Focus – January 2023 – Featuring Fire Opal; a gem on flames…
Opal is classified as a “mineraloid” or mineral-like in scientific terms. It is a silica-gel made out of microscopic spheres with water molecules in between, therefore an amorphous material. While opal is a widespread material…
*Gem Focus & Market Pulse (Free Subscriber)Colored Stone Market – January 2023
In the early days of 2023, we prepare for the AGTA GemFair against the backdrop uncertain economic outlook. Yet, prices in many of the commonly traded colored stone categories have maintained support.
Colored Stone MarketBlue Opal Find In Chihuahua, Mexico
A new location of blue opal has been revealed in the northern Mexico state of Chihuahua, near Copper Canyon in the Sierra Madre.
Featured ArticlesGem Focus October 2022: Diaspore; the color-change, the cat’s eye, and the red…
Diaspore from Turkey has been an exciting find for the devoted mineral and gem collectors for many decades.
*Gem Focus & Market Pulse (Free Subscriber)Gem Focus September 2022: Gold; the oldest commodity for all cultures…
Yellow metallic luster of gold is probably the most coveted sight for any explorer and miner since the beginning.
*Gem Focus & Market Pulse (Free Subscriber)Lab-Grown Diamond Screening
A laboratory-grown diamond, commonly referred to as "laboratory-created," "synthetic," "man-made," or simply "lab-grown," is a diamond that appears optically identical to natural diamonds.
*Free Featured ArticlesLab-Grown Diamond Update
Lab-grown diamonds are the focus of the industry and at Gemworld, we continue to get questions on all aspects from identification to pricing.
Featured ArticlesMarket Uncertainty Fuels Caution
Summer slowdowns and declining prices are the state of the industry. Inventories are robust and the sanctions on Alrosa do not seem to be impacting supplies. Only melee is in short supply.
Diamond Market