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Simon Alexander — diamantaire

Some rings are bought. Yours is made.

Where would yours begin?

RoundOvalEmeraldPearCushion
Lab-grownNatural

The diamond, first

It begins with the stone

A Simon Alexander round brilliant diamond engagement ring

Every ring is designed around the diamond you choose — natural or lab-grown, certified either way. We'll tell you when the cheaper stone is the better stone.

Begin your design
Designed in our boutique, finished at our bench

The house

Designed in our boutique, finished at our bench

Every ring is designed in our King William Street boutique — Australian made, set and hand-finished around the diamond you choose.

Begin your design

The named designs

Meet June

A round brilliant raised on six fine claws so light reaches the diamond from every angle. Made to order in gold or platinum, around the stone you choose — natural or lab-grown.

See June
Meet June

Where to begin

Start with a shape

Choose a cut — every design can be made around the diamond you choose.

The diamantaire

Simon Dimasi

Diamantaire · Designer · Author of A Diamond Truth

Designing fine engagement rings in Adelaide since 2001. Every Simon Alexander ring is drawn and overseen by Simon — made to order around the diamond you choose, natural or lab-grown, certified either way.

He wrote A Diamond Truth — an honest guide to choosing a diamond, so you understand exactly what you're buying before you do.

About Simon
Sit with us, by appointment

The boutique

Sit with us, by appointment

A quiet room on Level 1, 14 King William Street — loupe in hand, the diamonds in front of you, no pressure. Walk in during opening hours, or book a private consultation with Simon.

Book an appointment

The private atelier

The Lair

A room most people never see — where the rarest pieces begin.

Enter by appointment