About Us

Montclair Diamonds
The stone gets the credit. The setter does the work.
GIA-certified diamonds in 18k white gold, set by hand and priced without the markup a shopfront on Collins Street demands.
Why We Exist

Walk into a traditional jeweller and roughly half of what you pay has nothing to do with the ring. It covers the lease, the display cabinets, the staff on the floor, and the four other rings in the tray that nobody bought. The diamond itself is a smaller share of the ticket than most people would guess.

Montclair removes that layer. We hold a short collection, we sell it online, and the saving goes into the part you actually keep — a better stone and a setter who is given the time to seat it properly.

That second part matters more than the industry admits. A well-cut diamond in a rushed setting looks worse than a modest one set beautifully. It sits crooked, or too low, or the prongs are heavier than they need to be and they eat into the light. None of it shows in a photograph. All of it shows on a hand.

GIA certified, every stone
Independently graded and documented. The certificate ships with the ring, not weeks later on request.
18k white gold
Solid gold settings, not plated brass. Weight and finish you can feel when you pick the ring up.
Hand-set, not machine-seated
Prongs closed by a setter under a loupe. It is slower and it is the reason the stone sits true.
Six rings, not six hundred
One ring per cut. If we would not put it on someone we know, it does not go in the collection.
6
Rings In The Collection
60
Day Free Resize
GIA
Certified Throughout
How We Choose A Stone

Carat weight is the number everyone quotes and the least useful of the four. Two stones of identical weight can look a full size apart depending on how they were cut, because a deep stone hides its mass underneath where nobody sees it.

So we buy on spread and on cut grade first, clarity second, and weight last. It is why our two-carat rings read larger than two-carat rings elsewhere, and why we publish the millimetre measurements alongside the carat figure on every product page.

A ring is a twenty-year object. It should be set like one.
Questions about a stone, a size or a setting — ask before you order. We answer them ourselves.