Lab Paraiba-Colour Tourmaline Emerald Cut Solitaire Ring in 925 Sterling Silver — Adjustable

That colour — the one that reads as lit from within, the neon blue-green that exists almost nowhere else in the natural world — on the thinnest possible silver band, with nothing between you and it.

This ring is an exercise in reduction: a square emerald-cut lab-grown stone in Paraiba tourmaline colour sits in a minimal four-prong mount on an extremely fine plain 925 sterling silver band, open at the back for adjustable sizing. The Paraiba colour is the entire reason this ring exists — that vivid, electric blue-green caused by copper trace elements in natural Paraiba tourmaline, a tone that reads simultaneously as teal, aqua, and neon depending on the light and the angle. The emerald cut is chosen specifically to maximise colour display: the broad open rectangular step-cut face shows the full depth and saturation of the blue-green across a large surface with wide, clean colour flashes rather than broken brilliance. The four-prong mount is reduced to the minimum required to hold the stone; the band is as fine as structurally possible. The open adjustable back means the ring fits a range of finger sizes without alteration. The result is a ring where the stone does everything — and the stone is more than enough.

Why You'll Love It

• Paraiba-colour blue-green stone — the vivid neon blue-green of Paraiba tourmaline is among the most visually striking colours in gemstones; it appears luminous and electric in any light, reads as distinctive on any skin tone, and is immediately recognisable to anyone who knows fine coloured stones
• Square emerald cut — the open step-cut face maximises colour display across a broad rectangular surface; wide, clean colour flashes showcase the full depth of the blue-green rather than breaking it into scattered points of light
• Extreme minimalist design — four prongs, a fine plain band, nothing else; the design makes a deliberate argument that this colour needs no decoration, no halo, no additional stones — and it is correct
• Adjustable open band — the open-back design fits a range of finger sizes without requiring sizing; wear it on any finger without commitment to a specific size
• 925 sterling silver — the cool silver tone provides the highest possible contrast for the warm blue-green Paraiba stone, making the colour appear even more vivid and electric against the polished metal

Product Details

• Metal: 925 Sterling Silver
• Stone: Lab-Grown Paraiba-Colour Tourmaline (Square Emerald Cut, Vivid Neon Blue-Green)
• Setting: Four-Prong Minimal Solitaire
• Band: Plain Polished 925 Sterling Silver, Open Back
• Fit: Adjustable — open band fits most finger sizes
• SKU: R0972SK

At LabGrownPro, we believe fine jewellery should be beautiful, ethical, and accessible. Every piece is crafted with care — for you, and for the planet.