(CBS) --As you go shopping for a Mother's Day or graduation present and consider jewelry with rubies, do you really know what you're buying? Reporter Pam Zekman looked into complaints about the ...

"If you look at a top-quality, gem quality ruby versus the top quality of a diamond – let's say they're five carats each – the ruby is going to be much rarer and much more expensive than that ...

It's July, and if you have a birthday this month, the ruby is your birthstone. Rubies have been called the "king of gems," symbolizing strength, power and love. And they don't come cheap.You can buy ...