Best lab-grown diamond engagement rings under $1,500

Start here: the 3 ctw oval solitaire from Von Diamonds. A big, clean oval in a plain solitaire setting is the look most people picture for an engagement ring, and the size you get for the money is the whole point of going lab-grown. Solitaires also leave room to change the band later.

Who the others suit:

• Certified 3.40 ct round, 14K white gold — if you want a certified stone and a classic round brilliant; the biggest sparkle per dollar here.
• 1.50 ct oval hidden halo — if you prefer a daintier stone with a little extra detail under the head.
• Sunburst oval, half carat — a delicate, budget-friendly choice, or a stand-in ring for travel.
• Sterling silver half-carat — a low-stakes first ring or a placeholder while you shop together.

Two things worth knowing before you buy: confirm the metal (white gold and platinum wear far better than sterling silver for daily wear), and ask for the IGI certificate so you can see the stone's colour and clarity yourself. Sizing matters too — most of these come in one listed size, so check the return policy before ordering.