Buzz·Posted on 17 Aug 201622 Things You Need To Know About DiamondsBut not why millennials aren't buying them.by Emma CookeBuzzFeed Staff, UKLinkFacebookPinterestTwitterMail Diamonds. They're the most famous, most expensive, most sparkly gemstones in the world. Tap to play GIF Tap to play GIF But they're also pretty difficult to get your hands on. Tap to play GIF Tap to play GIF So we asked three jewellery experts for their tips on everything from buying diamonds on a budget to sourcing ethical stones: View this photo on Instagram Before we get started, let's talk about terms. View this photo on Instagram 1. Imperfect and non-traditional diamonds are just as beautiful as perfect diamonds. View this photo on Instagram 2. The cut of the stone refers to how sparkly it is, but it can also refer to the shape. 3. There are two kinds of coloured diamond; discoloured diamonds, which are cheaper, and rare "Fancy" diamonds. View this photo on Instagram 4. An "ethical" diamond should mean more than just "conflict-free". Tap to play GIF Tap to play GIF 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. Tap to play GIF Tap to play GIF 7. There's no specific amount you *should* spend on a diamond. Tap to play GIF Tap to play GIF 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. Tap to play GIF Tap to play GIF 10. If you see a super-cheap diamond ring, it's definitely too good to be true. Tap to play GIF Tap to play GIF 11. If you are on a budget though, there are lots of ways to cut costs. 12. If you can't afford a diamond, it's OK to buy a fake. View this photo on Instagram 13. And if you don't care about your stone looking like a diamond, there are even more colourful alternatives. View this photo on Instagram 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. Tap to play GIF Tap to play GIF 16. If you're buying vintage jewellery, you should shop around before buying to get a feel for the craftsmanship. View this photo on Instagram 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. Tap to play GIF Tap to play GIF 19. When you're choosing the setting for your diamond, platinum will resist the most wear and tear. View this photo on Instagram 20. Get your diamonds insured, either by taking out a separate policy or including it on your pre-existing contents insurance. View this photo on Instagram 21. Look after your diamond jewellery by keeping it away from chemicals and cleaning it regularly. 22. If your jewellery does break, don't worry! It should be fixable. View this photo on Instagram