Kate Middleton's had an on-again, off-again relationship with her engagement ring for a year. What's the royal secret about ...

Shop the best diamond engagement ring designs, from classic oval engagement rings to lab diamond engagement rings from brands ...

Jewelry designer Jason Arasheben of Jason of Beverly Hills tells PEOPLE that DK Metcalf was "was very involved in the entire ...

The now iconic ring features a 12-karat oval Ceylon sapphire set in 18-karat white gold and is surrounded by 14 solitaire diamonds. When Charles proposed to Diana in 1981, the piece was valued at ...

Originally Princess Diana's engagement ring, the 12-carat oval-cut Ceylon blue sapphire is surrounded by 14 round-cut solitaire diamonds, set in 18-carat white gold. 'You will certainly struggle ...