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On Saturday Kaley Cuoco and fiance Ryan Sweeting went to Marmalade Cafe in the valley, and the actress proudly showed off her 2.5 carat diamond engagement ring after brunch. She also looked pretty stoked to be prancing around with her hunky tennis pro beau on her arm...

The bauble came from Red C Jewels, and according to E! Online, it cost Sweeting a cool $65,000. Not bad considering these two have only been dating for about ... 10 WEEKS! Though sources close to the duo said it's been three months, she was seen with Superman hottie Henry Cavill in the first week of July, so if we're doing the math right, the two got engaged after less than 2 and a half months of dating. Not to get too technical, but you know...