Diamonds of all shapes, sizes and colors will be offered at Christie's Magnificent Jewels sale on April 25, including this extremely rare 9.39-carat fancy-deep-grayish-blue diamond ring. %% New York—Christie's auction house will offer its annual Magnificent Jewels sale on April 25 and its Important Pocket Watches and Wristwatches sale on April 26. %% The Baroda Pearls will anchor the jewelry sale, while a rare Patek Philippe timepiece will lead the watch auction. %% The Baroda Pearls is a two-strand natural-pearl necklace strung with 68 of the finest and largest pearls from the famed seven-strand natural-pearl necklace that once formed the cornerstone of the Royal Treasury of the Maharaja of Baroda. Christie's expects to sell the necklace for $7 million to $9 million. %% The Magnificent Jewels sale will include 260 lots, including diamonds, gems and signed pieces by Cartier, Graff, Harry Winston and J.A.R. Christie's expects the auction total to reach about $25 million. %% One of the finest sapphires on the market, a 22-carat Kashmir, is estimated to sell for $250,000 to $350,000 at Christie's Magnificent Jewels sale. %% The Patek Philippe watch, which has never before been seen at auction, is a single-button chronograph, Ref. 130. Christie's expects the piece to sell for $250,000 to $500,000. %% The watch auction will feature 390 lots, ranging from 17th-century pocket watches to modern, highly complicated pieces by Audemars Piguet, Jaeger-LeCoultre, Patek Philippe, Rolex and Vacheron Constantin. Christie's expects the auction total to reach more than $4 million.