Plum crafts premium lab diamond rings for couples who want it all: a drop-dead gorgeous diamond ring as well as a more sustainable and ethical way to seal the deal. We believe a ring should align with your values and priorities. We stay away from mined diamonds, craft rings to treasure forever, and our designs are a breeze to customize online. Lead by women who live and breathe diamonds and have been making rings for over a decade; we won’t steer you wrong. Free servicing and resizing for life.