Can I get an engagement ring with a colored diamond?

You can. But whether you should, and what you'll pay, depends on a distinction most clients don't know to make when they walk in.

Natural fancy color diamonds are the ones that come out of the ground already tinted by trace elements: nitrogen for yellow, boron for blue, radiation damage for green, a lattice distortion for pink and red. They're rare. A 0.42 carat fancy intense pink, SI1, from the Argyle mine sold last spring for about $22,000, and that was just the stone. Natural colored diamonds in purples, greens, true reds, and saturated pinks are so uncommon that most jewelers I know have handled maybe a dozen in their whole career, and the ones who have will tell you the market is thin and heavily gamed by a few dealers who control the inventory. Yellows and browns are more available, and the prices drop sharply once you step down from fancy vivid to fancy light, but a one-carat fancy yellow that's clean and well cut still isn't casual money.

The other kind is lab-grown. And after I show clients the numbers, that's where most of them land. Last fall, Marcus came in with a photo of a 5-carat canary yellow diamond ring he'd seen on a music producer. He wanted natural. When I quoted him a range, roughly $65,000 to $110,000 for a stone that size in fancy intense yellow based on recent Rapaport lists plus what a cutter would add for a clean crystal with no windowing, he went quiet and we sat with that number for a while. An hour later, he'd approved a CAD for a 1.08 carat lab-grown fancy vivid yellow, set east-west in an 18k yellow gold bezel. The stone cost about $2,400. I told him straight: it's a real diamond, same crystal structure, same hardness, same fire. It just grew in a chamber. He didn't pretend it was mined. He just wanted the color.

One thing to watch: colored diamonds need the right metal behind them or the color falls flat. Rose and yellow gold amplify warmth, and a pink diamond in platinum looks washed out, like a blush that didn't take. I've had exactly one client insist on a white setting for a fancy light yellow. She compromised on an 18k yellow basket with a white band, and it worked, barely. For blues and greens, white metals are fine. Think of the metal as the canvas, the stone is already the paint.

Lab-grown pinks and blues are improving fast. The boron in natural blue diamonds gives a steely undertone that lab stones don't fully replicate yet, but in a ring, on a hand, I doubt anyone could tell. A few months ago I set a 0.73 carat lab-grown fancy intense pink for a client named Priya, and the stone looked like spun sugar in morning light. She paired it with a rose gold band. It was right.

So, yes. Colored diamonds are an option. They are also a conversation about what you're actually paying for. Most of the time, the ring you're picturing is possible. It just might be a different stone than you thought. The ring will outlast the debate. That part, at least, I'm sure of.