Frequently Asked Questions
Everything you need to know about our ethical diamonds and fine jewelry.
Are Plum Diamonds lab-grown or natural?
We specialize exclusively in high-quality lab-grown diamonds. These are chemically, physically, and optically identical to mined diamonds but are more sustainable and ethically sourced.
How long does shipping take for custom engagement rings?
Since each custom ring is handcrafted to your specifications, please allow 2-3 weeks for production. Once complete, we provide free, insured overnight shipping within the United States.
What is your return policy?
We offer a 30-day hassle-free return policy on all standard jewelry items. Pieces must be in their original, unworn condition with all laboratory grading certificates included.
Do you offer a warranty on your jewelry?
Yes, every Plum Diamonds piece comes with a lifetime manufacturing warranty. This covers any defects in materials or craftsmanship to ensure your investment lasts a lifetime.
How can I find my correct ring size?
We offer a complimentary physical ring sizer that we can mail to your home. Alternatively, you can download our printable size guide from the product pages.
Do your diamonds come with certification?
Absolutely. All of our center diamonds are independently certified by leading gemological laboratories such as IGI or GIA, ensuring the quality of the 4Cs.