Hong Kong Jewellery Magazine - The International Magazine for Jewellery Professionals
Diamond earrings sell for world record $57.4m - BBC News
The De Beers Cullinan Blue Diamond Could Fetch $48M At Auction – Robb Report
Blue diamond - Wikipedia
Sotheby's Dubai Unveils A Rare Diamond Valued At Over $48M
De Beers Exceptional Blue Collection: 8 eccezionali diamanti blu all'asta da Sotheby's - Alkimiya Mag
Hong Kong Jewellery Magazine - The International Magazine for Jewellery Professionals
Rare Blue Diamond Could Fetch $48 M. at Sotheby's Auction –
Van Cleef & Arpels Celebrates Spring With New Two Butterfly Collection
BigDiamondsUSA Inc.