Wedding season has officially begun. While brides-to-be are busy planning away, we've been hunting down some serious bling. From black diamonds (#2) to sculptural settings (#3), we found seven unique engagement rings to celebrate your one-of-a-kind love. (Aww.)

1. Mandrel Studio Grey Octagon Rustic Diamond Halo Ring, $5,526

2. Cathy Waterman Rustic Black Diamond Leafside Ring, $5,710

3. Danhov Abbraccio Swirl Engagement Ring, $1,200-$2,160 (without stone)

4. Old Mine Cut Vintage Diamond Ring, $3,400

5. Antique Diamond Three Stone Ring in Sterling Silver and 18k Gold, $3,750

6. Erica Courtney Zoey Engagement Ring, price available upon request

7. Astley Clarke Satori Harmony Halo Ring, $5,400

Lily Ko (lily7x7 @gmail.com) studied fashion design and merchandising at Central Saint Martins and the Academy of Art University. In addition to writing for 7x7, Lily is on the creative team at Pottery Barn, and works as a freelance stylist, writer, and designer.