The ostracod is a tiny crustacean, smaller than a grain of rice, and some kinds of it light up. At night in shallow water they give off small flashes of blue, and for a moment the dark sea is full of points of light that disappear as soon as you look for them.

The ring is a single 1.5 mm line of gold that opens around the finger, and each end carries one diamond, 0.01 carat, 0.02 carat for the two. Two small lights facing each other across the opening, and very little else. The outside is brushed, soft and matte, and the inside is polished.

Because the ring is open, it can be adjusted a little to the finger, and it sits easily in a stack or alone.

Every ring is made to order.

Part of Deep Blue, a collection built from what the sea leaves behind. Solid gold, textured rather than polished, hollow where the shell would be hollow, made by hand in our Jerusalem studio.

Details

Metal: 14K or 18K gold, yellow, white or rose
Stones: 2 diamonds, 0.01 CT each, 0.02 CT total, one at each end
Band: 1.5 mm, open
Finish: brushed outside, polished inside
Size: open band, can be adjusted slightly to fit
Made to order, allow 3 to 4 weeks