Detection of synthetic amethyst. It is not easy to detect
synthetic quartz, except possibly by transparency to UV light.
When colour zoning is seen in quartz, it is probably of
natural origin, but very broad, rather sharply defined colour
zoning is typical of the synthetic material.
Some of the early synthetic amethyst have a smoky tinge.
The habit of synthetic quartz crystals is unlike that of
natural quartz, with the largest face being a basal pinacoid,
something rarely seen in natural quartz. A "cobbled" appearance
is evident on the surface of many synthetic crystals. This is
associated with imperfections within the crystals, and
theorically provides a means of identifying quartz crystals even
when cut. This effect may occasionally be seen with concentric
overhead illumination, where light is directed onto the surface
along the line of view.
If the seed plate is seen, the crystal is certainly a
"BREADCRUMB" inclusions with occasional spiky ends may be
seen near the seed plate.
-many stones are nearly flawless,but this is not a positive
-color zoning tend to be shades of purple and colorless but
again may be too subtle to use for positive identification.