Ok, here’s my tips. It’s all about the diamond. If she doesn’t like the ring design, and you’ve got a decent diamond you can always have it reset in a different style ring relatively cheaply (some jewellers will do it for free). Look at whatever rings you look at in natural light – the bright white 12v lights in the shop make them look nicer than they might be in natural light – a classic high street shop trick, you think you’re buying a nice twinkly diamond, but when you look at it out of the shop it doesn’t twinkle nearly so bright and might even look a bit yellowy-brown. A decent diamond will twinkle brightly in natural light as still appear clear. Far better to go to a manufacturing jewellers. You’ll get a much better ring for your budget than at a high street shop. If you’re near Birmingham go to the Jewellery quarter, there are literally hundreds of jewellers to choose from. Other than that there are the 5 C’s…
Cut: there are many different cuts but the most cost effective one is the Brilliant cut diamond as there is less wastage to achieve the shape. Get it mounted in a 4 claw ring as this allows maximum light to get in the sides and get refracted up through the diamond which gives it that twinkly appearance.
Colour: in my view this is the most important aspect. If you get as good a colour as your budget will allow then the diamond will noticeably look better quality and twinkle more brightly.
Carat: the weight of the diamond. Again depends on your budget, but from half a Carat up you pay a premium as they are usually professionally graded and certified. So if you’re after a half carat sized diamond then get a 0.47 Carat or something. A tiny bit smaller, but unnoticeably so and you get more for your money.
Clarity: again go for the best you can afford, but unless you get a diamond with really poor clarity you’re not going to notice it without looking through a loop, it’s more important for investment we quality diamonds.
The last C is about the diamond being certified, so not necessarily an important aspect unless you want or need to know the heritage of the diamond.