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The Better Ring Builder: start here for foolproof ring design. Finish with a classic style that stands the test of time.

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Bestselling Designs

Oval Engagement Ring
Oval Engagement Ring
Radiant Cut Cathedral Bezel Ring
Radiant Cut Cathedral Bezel Ring
Oval Hidden Halo Pave Ring
Oval Hidden Halo Pave Ring
Emerald Cut Engagement Ring
Emerald Cut Engagement Ring
Emerald Cut Wide Solitaire Platinum and Yellow Gold
Emerald Cut Wide Solitaire
radiant cut diamond engagement ring with solid white gold band
Radiant Cut Engagement Ring
Marquise Pave Prongs Wide Pave Ring
Marquise Pave Prongs Wide Pave Ring
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Hi, we’re Plum.

We're an independent woman-owned and operated purveyor of custom lab grown diamond jewelry. Our team is committed to helping you every step of the way to ensure you get the ethically-sourced ring you truly want without compromising on the stone or your values.

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Custom Isn't Customary

Those big box retailers aren't going to craft something just for you, and those mom and pop stores simply don't have the selection. We have our own certified sustainable manufacturing facilities that allow us to control quality and deliver a ring to your exact specs. Couple that with our hands-on team that is ready to work with you every step of the way, and we're simply the only choice for getting that big, beautiful ring that is uniquely yours.

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Such a great company to buy with! The whole process was smooth and easy. They took the stress out of purchasing a ring online and even followed up with emails after the order was placed and after the ring arrived! The presentation of the ring was spectacular. The ring itself, amazing!

- JOE C.

Pear Cut Hidden Halo with Pave Band

The quality of the lab grown diamonds was gorgeous and true to advertisement. 10/10 would recommend again.

- Ellie

Radiant Cut with Hidden Halo

Every person that I came in contact with was incredible. They worked with me to make the perfect ring, using my references and crafting exactly what I wanted. Everyone was so nice along the way. The ring itself is gorgeous. It looks exactly as it was shown to me and I’m beyond happy with it.

- Joshua J.

Emerald Cut with Pave Band

The ring is so beautiful! I’m so happy with it. I made a last minute adjustment to the size and they were able to make the adjustment right and made sure that it was delivered on time before our anniversary. Communication was top notch and couldn’t be happier!

- H Le

Oval with Wide Pave Band

This place is amazing. They have affordable lab grown diamonds with excellent customization ability. I had no trouble ordering the ring, and it arrived in a timely manner. Their customer service was amazing as well. They make sure to confirm addresses multiple times to ensure a safe arrival. 

- Evan F.

Radiant Cut Tall V Solitaire

Every aspect of the purchase experience was fantastic. We found exactly what we were looking for, easily ordered, and everything was delivered right on time. The ring (4.33 carat hidden halo engagement) is simply stunning, excellent craftsmanship and the diamond is simply fire! My wife is beyond thrilled!!

- DT

Eco-friendly

Custom

Lifetime care

Better value

Ethically sourced