Span collection
Product details
Engineers measure a bridge by one number before any other: its span — the distance it covers between two supports, with nothing holding up what's in between. The best spans have always relied on doing more with those two endpoints, rather than adding supports along the way.
That gap in the middle can look like the structure's weak point. It's actually the real accomplishment: proof of how much distance a design can cover using only its two ends.
The great cantilever bridges pushed weight outward toward those endpoints instead of stacking pillars beneath the length between them — real distance, carried by trusting the ends rather than the middle.
This ring runs on the same principle: one continuous line of stones held at its two farthest points, the space between them carried by that same trust — a distance covered clean, with nothing filling the gap.
The Composition:
- central gemstone: natural green tourmaline, scissor cut, VS clarity, 1.1 ct
- accent: lab grown diamonds: VS clarity, G colour, 0.51 ct total.
- accent: natural olive green tourmalines
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
Tourmaline
Its name comes from the Sinhalese turamali, “stone of mixed colours”, and it appears in more shades than almost any other gem. Some crystals hold several colours at once, like watermelon tourmaline with its pink heart and green rind. It also becomes electrically charged when warmed, so Dutch traders once used it to draw ash from their pipes.
A stone of versatility, balance and every side of a personality.

“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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