Rare blue diamond could fetch up to $15 million

STORY: This rare blue diamond could fetch

up to $15 million in auction

The 31.62 carat diamond is part

of the "Magnificent Jewels" sale

the final live jewelry auction of the year

for Christie's New York

Another sale highlight is a diamond

palm-tree brooch mounted by Cartier

which is expected to sell for at least $500,000

(Angelina Chen, Christie’s)

“This year the jewelry market has been very, very, very strong. We hear things about retail sales and all that, but the jewelry market is a little special because we do handle really rare and beautiful gemstones and signed pieces from design houses like Cartier, Tiffany and Van Cleef & Arpels. So, the client base is still actively acquiring pieces and looking for things that are special.”