Quick and Easy Buying Guide
Carat weight: 1 carat = 200 milligrams = 6.5 mm diameter. Doubling weight doesn't double diameter.
Diamond clarity: FL/IF/VVS/VS = super expensive, near perfect. SI = best value if you can check a photo for obvious inclusions (defects).
Color: D-G = colorless, expensive, only if you have money to burn. H-J = best value. Can go lower in gold metal settings than white metal.
Cut: Better cut ratings let more light into a diamond, making it sparkle more. Very important property, don't skimp here.
Set a budget and minimum cut (Premium). Go J color for gold and I/H for white metals. Go searching for SI1/SI2 clarity diamonds at James Allen. Pick a diamond with small/no inclusions. Choose a ring setting and buy it risk-free (60-day returns).
Where Can I Sell My Diamond Ring
If you're asking yourself where I can sell my diamond ring, you have a range of options. I won't go into the pros and cons of each option here (there are other articles on this website which do that). I do is give you a quick rundown of your options.
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Your first option is to go to your local pawn shop, or ideally a number of pawnshops, or second-hand goods shops and negotiate to sell or trade the diamond there.
Your next option is to list the diamond for sale in the classifieds, whether they be your local paper or an online selling site such as Craigslist.
Another option is to sell the diamond at auction. There are a number of online auction sites such as eBay where you can do this. There are also publicly run auctions where someone else will sell your ring for you.
Your last major option, if the ring was bought locally, is to go back to the store and try and sell it back to them. Expect to get ripped on the price as when the ring was originally sold to you it was probably marked quite significantly, perhaps by 100% or more.