Brazil has become one of the world’s top three most important sources of emeralds, alongside Colombia and Zambia.

Imperial topaz is a medium reddish orange to orange-red. This is one of the gem’s most expensive colors. Sherry topaz—named after the sherry wine—is a yellowish brown or brownish yellow to orange.

The fancy vivid yellow diamond, known as the New Sun ... “New Sun is one of the most significant events in the gemstone industry in recent years, highlighting Russia’s high status in the global ...