We've rounded up the best places to buy affordable engagement rings online—as well as some specific ... [+] designs we ... features lab-grown diamonds and recycled gold. In honor of Valentine ...

The sapphire, encircled by 14 solitaire diamonds ... engagement ring was set in platinum on a yellow gold band. Armstrong-Jones knew this unconventional but sweet design was the perfect compliment ...

The ring, which is rumoured to be from Tiffany & Co, features a large white diamond set on an incredibly chunky gold band.