I'm a 19, male, and typically hopeless at buying the right presents, but looking for gifts for my girlfriend, I found these. I wasn't that sure originally, but went for it while I have time to buy other things if they aren't right, and seriously, even if they don't look like your thing, BUY THEM!
They come in a stylish but simple black jewellery presentation box and honestly, they really are stunning! About 15mm x 5mm x 3mm (L x H x W) and they just sparkle - very pretty. As I said, these are for my girlfriend, and I'm sure will make an excellent Christmas gift.
Delivery was excellent also, ordered on Amazon Prime yesterday at 4pm and they had arrived by 11am today, perfected packaged! Amazing!
If you're in any doubt, just go for it, you really won't regret it, promise! Excellent purchase!