Richard got geeky about the art deco engagement ring here, which is a set with a large moissanite. The ring is inspired by a vintage ring so he got to go to town on the details. Moissanite which is gem grade silicone carbide. It’s an identical crystal structure to diamond, but every other atom is silicone instead of carbon, making it the second hardest stone after diamond, harder than sapphire. It is only man made as far as we know, but who knows what’s encrusted onto exoplanets.
Lab grown diamonds are still surprisingly expensive and this is a useful price, especially for this 8mm stone. The colour isn’t quite as good as a decent diamond, but it’s a little bit twinklier and a good choice for the ethical consumer. It really comes down to what you can find the romance in.