My friend is looking to buy a pair of diamond stud earrings. She only wants to spend $150 dollars on them. She found 1/2 carat diamond studs at Superjeweler.com. Here is the link: http://www.superjeweler.com/UserArea/ItemDetail/showDetail.asp?jwlKey=344 Is there better deals out there for this? This seems really cheap. Any suggestions on where we can find a better buy?