Is 0.24 ct too small for an engagement ring?

It is on the small side for a solitaire. On a size 4 finger a well-cut 0.24 ct round still reads as a real diamond, but expect a dainty look rather than sparkle across the hand.

Is D VVS2 worth it at this size?

D color and VVS2 clarity are near the top of the scale, and at 0.24 ct the difference from a G VS2 stone is hard to see without a loupe. You are paying for grading and the Tiffany name more than visible beauty.

Can a size 4 ring be resized?

Yes, the listing says it is resizable. Platinum resizing is usually done by a jeweler and adds cost and turnaround; going more than a size or two can stress the setting.

How does this compare to a non-brand solitaire?

At $1,675 you can buy a larger unbranded diamond of similar grade. The Tiffany premium buys the setting, paperwork and resale recognition, not more carat weight.

What should I check before buying?

Confirm the diamond certificate, the exact carat weight and that the size 4 band fits. Ask whether the price includes resizing, since that is often billed separately.

When is the best time to buy?

The listed best new price is $1,675 at The Diamond Oak as of November 4, 2026, with only one new price found. With no competing new listings, watch for seasonal jewelry sales rather than expecting a price war.