Is a lab grown diamond a real diamond?

Yes. It has the same carbon crystal structure as a mined diamond, just grown in a lab. It is not cubic zirconia or moissanite.

How big is a 5 carat oval diamond?

Carat is weight, not length. An oval of about 5 ct typically measures roughly 13–14 mm long, though the exact cut here is described as unique, so proportions vary.

What does F color and VS clarity mean?

F is near-colorless on the GIA scale, and VS means very slightly included, with flaws hard to see under 10x magnification. Both are strong grades for a white-looking stone.

Can I get it in another metal or gemstone?

The design is offered in 14k or 18k yellow, white or rose gold, or platinum. Capucinne says other gemstones can be substituted on request before you buy.

How should I care for a thin band with a large stone?

Have the prongs checked by a jeweler once a year and avoid knocking the ring on hard surfaces. A 1.6–1.7 mm band carries a big stone, so inspect it for wear.