News Archive

Pink Diaspore

Much of the pink diaspore rough seen to date has areas capable of cutting medium to large size stones that are eye clean and in many cases loupe clean

Red and Hot Purple Tourmaline

Unheated and vividly colored purplish red cuprian tourmalines have gained a special niche and become more of a collector’s stone, while rubellite remains one of the favorite tourmalines in the market.

Gem Focus – April 2021

Value of pyrite is as diverse as its use. While pyrite crystal specimens or pyritized fossils from famous localities would fetch thousands of dollars, small faceted pieces or beads would be sold in bulk for a few dollars only. Naturally, any custom jewelry piece would be valued based on the design and the designer, not the pyrite itself.

Colored Gemstone Market Trends in Uncertain Times Webinar Series: April 2021

Our guest is Roland Schluessel, FGA of Pillar & Stone International. Roland has built his business by supporting his trade clients with fine colored gems that he has sourced directly on location. His booth in Tucson is a favorite destination for GemGuide researchers because of his knack for recognizing popular trends in colored stones before they take shape.

Gem Focus – March 2021

A lustrous image of a white round object with subtle iridescence is the first thing that comes to mind when the word “pearl” is mentioned. The rare product of oysters from the vast oceans or unassuming mussels of rivers have always mystified human beings. Until pearl culturing was understood and studied over 100 years ago, many civilizations created divine stories about pearls and their origin. Technically, a reject of a bivalve, natural pearls are celebrated as a beautiful gemstone, not only due their rarity but also for their minimum processing for jewelry. Even though, pearl culturing gave access to much more common and affordable products. Iridescence, specifically “orient” for pearls has been one of the most desirable features of a pearl regardless of origin.