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Not sure about that perfect ring? Be confident buying your engagement and wedding rings with these tips.

1. Ensure your diamond is conflict-free. Amnesty International U.S.A. (amnestyusa.org) advises asking: “How do I know that your jewelry does not contain conflict diamonds (ones that are unethically mined)?” “Can you tell me where these diamonds came from?” “Can I see a copy of your company’s policy on conflict diamonds?” “Can you show me a written guarantee from your suppliers stating that your diamonds are ethically mined?” Solitaire ring with diamond mined in Canada, by Polar Bear Diamond.

2. Use recycled gold. Some jewelers work with precious metals that have been reclaimed; that way they avoid metal mines, which can sometimes harm the environment or communities (for more on this, see earthworksaction.org). You can even trade in your own old jewelry and have your wedding bands made from its gold. Go to greenkarat.com or ask your local jeweler for more information. Hammered rings of recycled 18K gold with diamonds, by Tracy Matthews Designs.

3. Consider a vintage piece. Wearing an antique is the ultimate in recycling, and there are so many beautiful designs available. Do a search of estate or antique-jewelry sellers in your area—or wear Grandma’s diamond in a setting made just for you. Vintage sapphire, diamond and platinum ring, by Camilla Dietz Bergeron.

4. Look into created stones. Yes, scientists can now make diamonds and gems in a laboratory! These aren’t faux—they’re grown from a small gem “seed” under conditions similar to those beneath the earth. Another bonus: Lab-grown (also referred to as “cultured”) stones usually cost less than mined ones. Check out gemesis.com or apollodiamond.us for more on lab-created diamonds. Ring with cultured yellow-diamond center stone, by Renaissance Diamonds.

5. Buy from a trusted source. Go to nodirtygold.org for a list of retailers that have vowed to adhere to ethical environmental and labor standards; quite a few well-known jewelry stores are included. Also try jewelry designers that have made it their mission to stay eco-friendly and socially conscious, like GreenKarat and Brilliant Earth. Stacking rings with diamonds and sapphires, by Brilliant Earth.