Delta collection
Product details
In mathematics and physics, delta (Δ) is the symbol used to mark change — the measured difference between two values, like a starting velocity and an ending one, or a temperature before and after. It always describes the gap between two states, calculated as precisely as either value on its own.
That gap counts as real information, worth naming and measuring in its own right.
This ring is built on the same idea. The band forms two distinct planes, offset in height, each reading as its own fixed state. The triangular stone sits bezel-set exactly at the seam between them, marking the measured difference the way Δ marks it in an equation — the record of the shift from one plane to the other.
Called Delta, the ring holds that same function: a single point where a change becomes visible and precise.
The Composition:
- Center stone: natural sapphire, triangle cut, yellowish colour
Create custom ring
Any design in the shop can be rebuilt around a different stone, metal or size. Tell us what you have in mind and we will sketch it for you.
Our shipping & processing times
Shipping to the USA: free, zero import tax. Orders ship from our US branch, so there are no import taxes or tariffs to pay.
- Made to order: 4–5 weeks
- Ready to ship: 10–12 days
Every package is fully insured and signed on receipt.
Also available in
Sapphire
An old Persian legend tells that the earth rests on a giant sapphire whose reflection colours the sky. Worn by royalty and clergy, it has long been the stone of the heavens.
A stone of truth, wisdom and loyalty, in every colour from blue to pink, orange and teal.

“A stone waits millions of years inside the earth. I give it the same patience while I decide which cut will bring out its light”
A piece of jewelry worthy of the moment it’s opened
Every order arrives in a thoughtfully curated package – designed to delight from the very first moment, no extra wrapping needed.
- Box
- Rigid, lined, magnetic close
- Inside
- Ring, certificate, care card
- Wrapping
- None needed
- Delivery
- Insured, signed on receipt

Stone of this moon: Tourmaline
- (01) Origin
- Afghanistan
- (02) Treatment
- Natural, unheated
- (03) Hardness
- Mohs 7.25
- (04) Certificate
- Independent report, in your name
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