If you have the money to buy a diamond, here's some Diamond's on sale from Amazon website:
Platinum Radiant Cut 3-Stone Diamond Ring w/ Trapezoid Sidestones (GIA Certified 5.46 ct center, 7.69 cttw, G Color, VS2 Clarity), Size 6
14K White Gold Diamond Bracelet -- 16.50 Ct. VS1-VS2 GH
Platinum and 18k Yellow Gold Fancy Vivid Yellow Cushion Cut Diamond Ring (GIA Certified 2.12 ct center, 3.57 cttw), Size 6
Enjoy your holiday.