Here’s how it works. The Lulo Rose is the largest pink diamond found in 300 years, and could become the single most expensive gemstone ever sold. (Image credit: Lucapa Diamond Corp) ...

Rosé of K-pop girl group BLACKPINK smiles during an event to promote her film 'Born Pink', marking the group's eighth anniversary, in Seoul on August 9, 2024.

A 51.28-carat round brilliant-cut diamond ring of I color, SI1 clarity realized more than $1.6 million; and a 9.56-carat Bulgari diamond ring of D color and VVS2 clarity, fetched $630,000.