I often wear these necklaces by Pilgrim. They can be worn short or long, but I tend to wear them long. I have them in yellow gold, rose gold, hematite and silver. I bought them all on sale so I could buy all of them for less than the original price of one of them!
What I like about them is that they are very simple and discreet, and can be worn with with the flat or the rounded side facing front.
The items in this series (rings, earrings, necklaces) come plated in hematite (dark grey), rose gold, yellow gold and silver. Some of them have stones in them. I have worn mine for ages and they have not tarnished or dulled at all.