D Colour Moissanite Studs, 0.1ct to 1.5ct in 925 Silver

Most people shop for studs by carat, but the number to read is the millimetre. A 0.1ct stone measures 3mm, 0.3ct is 4mm, 0.5ct is 5mm, 0.8ct is 6mm, 1ct is 6.5mm and 1.5ct is 7.5mm. Each step is small on paper and obvious on the ear, which is why the 0.5ct is the most common pair and the 0.1ct is the one people forget they are wearing. These are round stones set in 100% 925 sterling silver, in a plain, low profile design.

The stones are D colour moissanite. D is the top of the colourless scale, so there is no warm tint to show up against a white metal, and at a few millimetres across that purity is easy to see in daylight. Moissanite has a refractive index of about 2.65 and a hardness of 9.25 on the Mohs scale, so it flashes more than most stones this size and keeps its sharp facet edges through daily wear, hair and pillows included.

Choose a finish and a back. Finishes are gold, silver and rose gold, so match them to the rest of your jewellery. The back is either push or screw. Push backs are fast and comfortable and suit the 0.1ct to 0.5ct sizes. Screw backs grip the post and are the safer option for the 1ct and 1.5ct stones, which are heavier and more likely to loosen. If you move a lot, sleep in your earrings or have small hands grabbing at them, choose screw.

• Stone: round moissanite, D colour
• Sizes: 0.1ct 3mm, 0.3ct 4mm, 0.5ct 5mm, 0.8ct 6mm, 1ct 6.5mm, 1.5ct 7.5mm
• Metal: 100% 925 sterling silver
• Finish: gold, silver or rose gold
• Backs: push back or screw back