Does anyone know the name of a purple gemstone that changes colors in different lighting conditions?
It is not an amythyst or an opal. It's a purple stone that changes to blue or red, and sometimes has flecks of green in it. I have a ring like that, but I can't think of the name of the stone. Any gemologists or jewelers out there?
It really is best if you have a photo to show us. (If you do, drop me a message on my 360). But from what you've described, I suspect you may have either a Topaz that has been coated to produce this sort of effect (trade name - Mystic Topaz) or a synthetic color change Corundum (Sapphire).
Mystic Topaz is essentially colorless Topaz that has been given a coating to produce an iridescent effect. This is very similar to some lead crystal glass beads or stones you may have seen in the craft shops. Mystic Topaz can come in any color depending on the coating given. Although most stones are coated on the pavilion (base) of the stone, some are also coated on the table. Some of the better produced stones (such as Azotic TM) are durable and will resist scratching. Others will not and the coating may come off with a light scratch from a blade or even a needle.
Synthetic color change Sapphires are typically a deep green color that changes to purple and red under incandescent (yellow) lighting. They were meant to simulate Alexandrite. If the stone is not cut in the proper direction, some "bleeding" of color will occur. i.e. you may see all three colors at one time.
Hope that helps!
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