RING SIZE: If you are not sure about your ring size you can visit your local jewellery store to find out (most accurate), or visit findmyringsize.com
My ring sizes are as follows in South Africa and UK sizing:
X-Small : I and J
Small: K, L and M
Medium: N, O and P
Large: Q, R and S
X-Large: T and U
Ring sizes can also be half, e.g. "L 1/2"
BRACELET SIZE:
16cm, 17cm, 18cm or 19cm. If the product states that the chain is adjustable, then the size will be 16cm to 19cm.
NECKLACE SIZE:
40cm, 42cm, 45cm, 48cm or 50cm. If you are not sure, use a string and see what length you are the happiest with.
BANGLE SIZE:
Small (61mm),
Medium (63mm),
Large (65mm)
If the bangle is open ended, then they are slightly adjustable.