Whether you’re dropping subtle hints of solitaires to your boyfriend or putting the finishing touches on your wedding regalia, every bride-to-be contemplates diamonds at some point. And for those who think green, ethical jewelry choices abound now — from wedding sets to the perfect complements to your wedding gown.

Read on for our top picks from our favorite eco-designers and resources.

Diamond in the Rough

For the girl who eschews the round brilliant, Melissa Joy Manning's diamond slices are a modern take on the diamond solitaire. (Courtesy of MelissaJoyManning.com)

For the girl who loves nature in all its rough-hewn glory, what better engagement ring for her than a diamond slice from Melissa Joy Manning? This 4.2 carat milky white giant ($7,940), bezel set in 18 karat recycled gold, could be the perfect fit. And better yet, 10 percent of all sales through March 2010 will be donated to the American Red Cross’s earthquake recovery efforts in Haiti.

Pearls of Wisdom

Wearing a strapless dress but feeling bare on top? This multistrand pearl necklace (£39) from Eco-Monkey is a youthful (and well-priced!) update on the classic and gives just enough coverage above your decolletage.

Something Old

Check off the “something old” and “something blue” from your list with this vintage diamond and sapphire bracelet ($3,495) from Ross Simons’s estate collection. It’s circa 1980, so it’s not exactly old old, but it is so pretty that you’ll want to justify any reason to buy it.

Modern Vintage

If you want to ensure your diamonds come with a clean background, BrilliantEarth.com’s Diamond Flower Stud Earrings ($1,500) are guaranteed conflict free from Canada. The total carat weight for these studs reaches two-thirds of a carat and are set in a delicate vintage-inspired floral pattern in 18 karat white gold. (Not to mention they don’t scream “wedding jewelry” — you can wear these for life.)

Eternity Is A Long Time

Why not spend it on something classic that will never go out of style? Choo Yilin Artisan Jewelry is a newcomer to the ethical jewelry set, but her timeless trinity eternity bands (price upon request) handcrafted from reclaimed metals should be a part of every bride’s wedding set.