Opal bodytone and brightness grading system explained
In this video you will see the opal bodytone and brightness grading system used by opal sellers worldwide. I use real opals to show you a hands on feel to the way the scale works.
In this video you will see the opal bodytone and brightness grading system used by opal sellers worldwide. I use real opals to show you a hands on feel to the way the scale works.