|Golden beryl can range in colors from pale yellow to a brilliant gold. Unlike emerald, golden beryl has very few flaws. The term "golden beryl" is sometimes synonymous with heliodor. Both golden beryl and heliodor are used as gems.|
Friday, 29 November 2013
Wednesday, 27 November 2013
|Argyle Diamonds has devised the C1 to C7 colour scale to grade champagne diamonds.|
Gemologists use three terms to describe color in natural colored diamonds:
Sunday, 24 November 2013
Tuesday, 19 November 2013
Angola, the world's fourth-largest diamond producing country by value and sixth by volume, could regain record production levels enjoyed before 2002 thanks to its new mining law and higher quality diamonds, says a new study.
Sunday, 17 November 2013
|A combination of field surveys, airborne mapping, and high-resolution satellite imaging have determined that small clandestine operations now make up more than half of all gold mining activities in the Western Amazonian forests of Peru.|
The authors discovered hundreds of new small mines in the foothills in the headwater region of the Colorado, Inambari, and Malinowski Rivers.
|While the total land loss in Madre de Dios appears small compared to other tropical regions undergoing deforestation, the study emphasized that “Madre de Dios is world-renowned for its unusually high biological diversity."|