Kim Kardashian just announced her engagement to boyfriend Kris Humphries earlier today, and now we've found more info on her 20.5 carat sparkler! The $2 million Lorraine Schwartz ring features a 16.5 carat emerald cut center stone flanked by two 2-carat trapezoids. "We make the metal so fine that the light shines through. Some people don't believe it's real," Lorraine Schwartz told InStyle of her ethereal pieces. Kim Kardashian isn't the only celebrity fan of the jeweler—Beyonce Knowles, Jennifer Lopez and Cate Blanchett have all worn Schwartz's designs. Kim's sister Khloe couldn't resist tweeting about the massive bauble today. "I went roller skating on it earlier! Sad thing is I got tired, jumped off! It was just too big2 skate the whole thing," she joked, later adding "Kims ring gave birth to my ring! LOL but my ring is perfection! Its from my Lammy."