Amadeus rings are available in USA size 6 to 9. If you are unsure what yours is, measure a ring you already have and follow these steps.
Place your ring over the guide until you find the right fit or compare it to the inside diameter.
If that did not work for you, measure an existing ring.
1) Select an existing ring that fits the desired finger.
2) Measure the internal diameter of the ring (in mm).
3) Use the above chart to determine your ring size.