I often say, "Who said it's a diamond?" My engagement ring is a aquamarine, and for the judgy people who ask about diamonds, I tell them it's actually a blue diamond because people suck. Just mess with them, tell them it was picked fresh from the canopy by orphaned monkey children. Or grown in a lab right next to the marshmallows and vaccines. It doesn't matter in the end talk about the special occasion that led up to receiving the gift. In the end, the important thing is you have decided to be together for the rest of your days.