4mm Moissanite Ring, 1.5cttw D Colour in S925 Silver

A 4mm stone width is the practical middle of the range for a wedding band. Narrower than 3mm and the stones get lost next to an engagement ring; wider than 5mm and the band starts to crowd the knuckle. At 4mm, with 1.5 carats total weight spread across the band, each stone is large enough to read individually from arm's length while the ring still sits low enough to wear every day without catching. That is the width most people settle on.

The stones are D colour moissanite, which is the top of the colourless range, on S925 sterling silver. D colour matters on a band more than on a solitaire, because you are looking at several stones at once and any warm or grey tint in one of them shows against its neighbours. The material is hard at Mohs 9.25 and its refractive index of about 2.65 is higher than diamond, so the row flashes rather than glows.

Two finishes are offered. Silver, described as white gold colour, is the one that matches most engagement rings and reads as the neutral choice. Rose gold is warmer and is usually chosen when the ring is worn on its own or against other rose gold pieces. Sizes run from 5 up to 10 in half steps, which gives you a close fit. On a band with stones all across the top, a snug size stops the ring rotating.

• Stone: 4mm round moissanite, D colour
• Total weight: 1.5CTTW
• Metal: S925 sterling silver
• Finish: silver (white gold colour) or rose gold colour
• Ring sizes: 5, 5.5, 6.5, 9, 9.5, 10 and half steps between (US size)
• Setting: prong set matching wedding band