From astrological signs to flowers, there are many identifiers for someone's birth month. But there is none quite as beautiful or valuable as the birthstone. Each month has its own gemstone which ...

Gemstone-encrusted jewelry has always held a special place in human history. From royal crowns to everyday rings and pendants, gemstones have been admired not only for their beauty but also for the ...

In a gilded ballroom at the Four Seasons hotel in Geneva last month, the world’s wealthiest collectors and their envoys gathered to bid on the final and most anticipated lot: a nearly 19-carat ...