Diamonds. They're the most famous, most expensive, most sparkly gemstones in the world.
But they're also pretty difficult to get your hands on.
2. The cut of the stone refers to how sparkly it is, but it can also refer to the shape.
4. An "ethical" diamond should mean more than just "conflict-free".
5. Beware Kimberley Process certificates – they're not proof a diamond is ethically sourced.
6. Check your diamond is ethical in-store – NOT after you've bought it.
7. There's no specific amount you *should* spend on a diamond.
8. Check you're getting a good deal by doing price comparisons and looking at the detail.
9. Diamonds are a great investment – diamond jewellery isn't.
10. If you see a super-cheap diamond ring, it's definitely too good to be true.
11. If you are on a budget though, there are lots of ways to cut costs.
14. There are pros and cons to buying from big jewellery chains.
15. When you buy from a big-name jeweller, you're also paying a premium for the brand name.
17. Shop at smaller, independent jewellers for a more personal service and a more competitive price.
18. Diamonds are forever if you look after them – but it IS possible to crack or break one.