The way this charm wears is what makes it. Instead of a single sparkle, the whole row of baguette-cut aquamarines flashes at once. The light catches the flat facets, creating a bar of blue light that moves with you as the charm slides along the chain.

A fine, gold-plated cable chain holds a single, sliding charm. The charm is a polished cylinder, like a small bead, with a channel running through its centre. Set inside that channel are sixteen rectangular, baguette-cut aquamarines. They're arranged vertically, side-by-side, creating a solid band of pale blue colour. The high-polish gold rims on either side contrast with the geometric facets of the stones.

The core of this charm is solid 925 sterling silver, which gives it a nice, satisfying weight. We then plate it in a thick layer of 14K gold for its warm colour. On top of that, we add a final E-coating, which is a clear, protective layer. This extra step helps seal the gold against tarnish and daily wear, which means it will keep its colour longer. It also creates a hypoallergenic barrier, making it comfortable for most people with sensitive skin.

• Base Metal: 925 sterling silver
• Plating: 14K Gold with protective E-coating
• Gemstone: 16 natural aquamarines, baguette cut
• Chain Style: Cable chain
• Chain Length: Adjustable 16" to 18"
• Sold as: A single necklace

This piece works because the charm is small and symmetrical. It always sits right in the centre, and because it slides freely on the chain, it's really comfortable to wear. It’s a very geometric and modern way to wear a gemstone, different from a classic solitaire pendant.