Born fromLight.
Real diamonds, set by hand in the Downtown LA jewelry district. Everyday luxury with California light in every facet.
- Graded in-houseCertificate with every piece
- VS · F–GOur standard clarity and color
- 14K gold18K and custom on request
- Lifetime careClean, polish and prong check
Solitaires, set by hand
Shop by shape
Find your shape
Certificate of Authenticity
Every piece comes with its own record.
Before a stone is set, our bench on Hill Street grades it by hand. Each piece ships with a printed certificate and a QR code that opens its record online, for as long as you own it.
- Cut, color, clarity and carat, graded by hand
- A unique certificate ID, linked by QR code
- Look it up, print it or share it any time
Certificates are issued and graded in-house by Don Key.
Size guide
See the difference
Slide to compare any two of our stones. Sizes in millimeters, prices pulled live from the collection.
Hold any credit card against your screen. Drag until the box matches its width.
Round brilliant, ideal proportions. Millimeters are typical per-stone diameters; every stone is measured in-house.
From loose stone to your hand
- 01
Pick the stone
Choose shape, size and color with us. Every lab-grown diamond is graded in-house.
- 02
Design it
We sketch and model your piece in CAD, then 3D print it so you can see it first.
- 03
Set by hand
Cast and set by our bench on Hill Street, in the heart of the LA jewelry district.
- 04
Wear it
Finished, polished and shipped insured, with its own certificate, ready for everyday light.
Raised in the diamond district
Don Key started on the brokering tables of LA's diamond district and grew up inside a family jewelry trade. We were among the first to bring lab-grown diamonds to the US market, and we still make every piece a few blocks from where it began.
Follow along
@donkey.la on Instagram
New pieces, bench days on Hill Street and how our studs look on real ears.



