What is the difference between a bracelet vs. bangle?
A bangle is a solid, one piece band that is worn on the wrist and that does not have a clasp or opening,
Here are a few beautiful examples of bangles:

Gold gemstones bangle

White gold, diamond and black onyx bangle
Bracelets, on the other hand, do have a clasp so that they can be opened around the wrist and they are flexible. Bracelets can be either circular or elliptical.
Here are a few beautiful bracelet examples:

Flower family birthstone bracelet

Gold link bracelet
How do I find my correct bangle vs. bracelet size?
Bangle: To determine the correct size for a bangle, measure the widest area of your hand so you’ll be able to easily slip the bangle off and on your hand.
Bracelet: To determine bracelet size, measure your wrist size. For a looser fit, add a few mm/cm to the size.
We’ve created this bracelet sizer that you can download for free to help you take the correct measurements. It includes illustrations for measuring circumference and a measuring tape.
Important! When you print the document, make sure you specify actual size, in the print instructions so that the measuring tools print out accurately.
Don’t have a printer? No worries. Here’s what you do:
If you already have a bracelet that fits just right, just measure the space from one interior side to the other interior side (the diameter). This will give you your measurement.
If you don’t have that perfectly fitted bracelet, there’s an easy workaround for that too. You’ll need some paper, a pen or pencil, scissors and measuring tape (or a ruler). Here’s what you’ll need to do:
Cut a thin strip of paper (approx. ⅛” – ¼” wide) that can wrap around your wrist one time. It should fit securely enough around your wrist so that it’s not so loose that is might fall off, but not so tight to make it uncomfortable when worn.
Use your pen or pencil to draw a line where the paper ends on your wrist. Then, lay the marked strip of paper out flat and measure the length of the paper from your mark to the end of the strip. That number is your wrist measurement.
For bangles, the process is the same, but you will measure the width of your hand from its widest points. Touch your little finger to your thumb and then use the strip of paper to measure the circumference of your hand around the widest points.