When it comes to diamonds, there are numerous scams to avoid. Most scams are minor, but there are some major ones that come up from time to time concerning the buying and selling of diamonds. Scams occur simply because most people who buy diamonds - for whatever reasons - don't know that much about diamonds. Therefore, they are easily fooled. Jewelry stores  like to show their diamonds in bright lights. Lights make diamonds shine. Ask to see the diamond in a different, darker type of lighting as well. Jewelry also stores often run "fluorescence" scams to varying degrees. Referring to a diamond as a blue-white diamond is such a scam. A blue-white diamond sounds very unique and special, but in fact, this type of diamond is of lesser quality - even though the jeweler will...