While topaz normally ranges from clear to golden yellow to brownish yellow in color, the gem also has a green variety. The green color is caused by chromium or vanadium coloring a clear topaz stone, ...
Each picker averages 1 kg per hour. He personally grades the rough, first by color (red, orange, pink, yellow, colorless, green, bicolor, or schiller) and then by size. The strategy is geared toward ...
Amethyst may develop into the more common citrine and rarer green quartz naturally under certain geologic conditions. On the California-Nevada border, just north of Reno, amethyst, citrine, and green ...
One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including gemstones and paint pigments. Even the colour of blood comes from the protein ...
Green Minerals AS stock price live, this page displays OL GEM stock exchange data. View the GEM premarket stock price ahead of the market session or assess the after hours quote. Monitor the ...
Yellow Sapphire is considered ideal for long-term financial success ... Citrine, often known as the ‘Merchant’s stone, is thought to bring prosperity and wealth. Green Aventurine, often known as the ...