PA
The Quarters
Four drops a year · limited runs
Colour comes from
trace elements.
Chromium makes ruby red. Iron makes sapphire teal. Four times a year we release a small run of colourstones named for the element behind them — announced in the Letter, gone when the quarter ends.
Live now — Autumn 2026
The Iron Quarter
Iron is why sapphires run teal and why the deep blues hold. One element, one palette, one quarter.
Teal sapphire
Denim sapphire
Petrol spinel
PA
The Atelier
Not on this page?
Draw it with us.
A colourstone from a quarter that has closed, or a stone no quarter has run yet. Anything the catalogue does not carry — another stone, another length, a piece that does not exist yet — is drawn with you and made by hand.
Start at the Atelier