Tonights opal is an interesting one. 1.40c, 10mm x 7mm x 2.5mm. It’s a hand-cut freeform, but has an overall oval shape. Red, green, blue, you name it, it’s got it, and not to bad as brightness goes. Has color from nearly every angle, however each strip in the opal has some limited angles. This makes for avery interesting play of colors when looked at. Now, for the uneducated:
When cutting opals, the optimal cut is on the same plane as the color bar. Plane being a geometry term for a flat plane defined by a length and width, with a zero height. Color bars are not infinitely thin, in fact, when cutting an opal, it is wonderful if you get a nice thick one to work with. Color bars don’t always follow the rules. They are naturally formed and get pretty convoluted. This particular stone is a slice of opal that was perpendicular to the color bars. It was to thin to cut normally, so I chose to simply work with it as it was. The result is the series of strips of color that go across the stone. 