Left: Martyn Lenoble proposed to Christina Applegate on Valentine's Day with an Edwardian ring. The delicate ring features approximately 4ctw of diamonds. Right: Vintage Marquise Diamond Engagement Ring, centering a Marquise diamond weighing app. 0.45ct., framed by Single Cut diamonds weighing app. 0.60ctw., fashioned in platinum. Size 6.25.

L: Jennifer Love Hewitt’s Engagement Ring was a heirloom given to her by Ross McCall. The center diamond is approximately 1.5 carats, surrounded with floral diamond accents set in platinum. The antique engagement ring has been in Ross’ family for over 100 years. R: Vintage Engagement Ring, TRB 1.02ct, centering a Transition Round Brilliant weighing 1.02ct (F color, VS1 clarity), framed by Old European diamonds weighing app. 3.00ctw, fashioned in silver-topped 14k gold. Size 7.EGL-US87153403D

L: Javier Bardem proposed to Penelope Cruz with a vintage three carat sapphire ring. The sapphire is surrounded by a halo of diamonds, which brings out the beauty of the stone. R: Antique Sapphire & Diamond Ring, centering an Oval sapphire weighing app. 1.10ct, framed by eight Old Mine Cut diamonds weighing app. .85ctw, fashioned in 14k gold. Size 8.5.

L: Writer Lee Kirk proposed to "The Office"'s Jenna Fischer with a vintage solitaire engagement fashioned in yellow gold. R: Vintage Diamond Engagement Ring, centering a diamond weighing app. .17ct. fashioned in 14k & 18k gold. Size 7 3/4.

L: Prince William proposed to Kate Middleton with his mother's (Princess Diana) engagement ring that she has selected from the Crown Jeweller's Garrard, after Prince Charles' proposal. The ring is centered by a 18ct sapphire and surrounded by diamonds. R: Vintage Sapphire & Diamond Ring, centering a natural sapphire (no evidence of heat treatment) weighing app. 3.20cts, framed by Round Brilliant Cut diamonds weighing app 1.60ctw, fashioned in 18k. Size 7.50