Beautiful, quick, and easy to knit--what more could you ask for! It stretches slightly and if you knit it too large, you can always attach the clasp at any point in the knitted section and create a shorter necklace with a long hanging section in the back.
This necklace was easy and quick to make and came out beautifully. The only reason for the rating of 4 instead of 5 is that I found the length far too short--only a very small necked person would be able to wear the necklace as written and have it look like the photo. It was easy to adjust the size, though--just be sure to measure to find the correct length for you before you start! I look forward to making many more in the future as gifts!