Christie's A rarely-seen 17-carat diamond ring is going up for auction ... is a RMS-10 Tourbillon Koi Fish model featuring 18K rose gold and bezel set diamonds. Mark Zuckerberg and Wife ...

The focal point of Lively's engagement ring is a shimmering 12-carat pink oval-cut diamond. Schwartz also designed Lively's rose gold wedding band, which features a series of delicate diamonds.