For its Important Jewels Auction in September this year, Sotheby's is offering a 19.51 ct. platinum and diamond ring from Harry Winston. This jewel will lead the offerings of the auction, and is expected to sell for $1.2 million–$1.8 million, reports say.

. The auction will also offer a 15.10 ct. platinum and diamond ring carrying a sale estimate of $1.25 million–$1.75 million.

Included amongst the other notable pieces being offered at the auction are a platinum, palladium, and diamond triple-band cuff bracelet worn by late animal welfare activist Elisabeth Lewyt on her wedding day (estimated to sell for $40,000–$60,000), a 1.08 ct. platinum, fancy vivid blue diamond, amongst others. The auction is slated in New York City.