All these rubies show really rich hot pink colours and the contrast between the central rose cut stone with the sparkly faceted shoulders, makes for a really beautiful ruby ring. The central stone is a rose cut Mozambique ruby and weighs 2.16ct. I would set this in 18ct yellow gold as it would give it quite a regal charm. This 7 stone ring would cost £2590 in 18ct gold. 

If you're looking to stay traditional with diamonds in an engagement ring, but remain unique, this is a fantastic option. Often called salt and pepper diamonds, these grey rose cuts have a combined weight of 1.86ct and have a beautiful sparkle to them. This set in 18ct gold would be around £3620. Why not set it in 18ct white gold to enhance the grey, almost vintage, steely tones? 

Charming rose cut, pear shaped emerald with a single champagne diamond. The emerald is full of character with its natural imperfections and would look great set in 18ct yellow gold or a mixture of yellow and white. The emerald weighs 3.41ct. For a simple design like this, where the emerald is set 'mimosa style', this design would cost £1890. 

This icy white rose cut diamond weighs 1.55ct and will look absolutely stunning when set. I don't have a recommendation for metal for this piece because it will look fantastic in whatever metal you choose! You could set it with other stones or simply on its own as pictured. Get in touch if you'd like to see how this would look with other stones. For a simple and elegant design as shown, price guide would be around £1970 in 18ct.