Russian miner reduced output to 33 million carats amid sanctions, waning demand for rough, and low prices.

Organization will give luxury brand prize for High Jewelry Excellence.

December issue also explores live-stream retailing, Paraiba tourmalines, and copycat designs.

Pocket watch is highest-valued piece of memorabilia from sunken boat.

Larger stone is called Motswedi, Setswana for a water spring that gives life, while the other is Seriti, which means aura or presence.

Figure up 0.7% to $724.6 billion for the month.

National Retail Federation expects strong final weekend before Christmas.

Blue-diamond ring valued at up to $6.4 million among a number of items that failed to find buyers at Important Jewels sale.

Company garners $93 million from two sales in October and December.

Magnificent Jewels sale totals over $3.1 million.