Barrett
Ideal_Rock
- Joined
- May 26, 2009
- Messages
- 2,218
Check out this cool website I saw posted on another forum. It talks about magnetism in gemstones and how it can be used to discern what you may have or not have. It's actually a good read..informative and easy to understand plus the fact anyone can use magnetism to test their stones and not have to have some expensive tool or training like some other gemmo tools. You just need a neodymium magnet which some people have already or can be picked up for $6. Just go through all the pages at the bottom and click the links as well.
http://gemstonemagnetism.com/
"Synthetic gems and imitations gems like glass are mostly inert or weak, and can often be separated from natural gems. The metallic dopants used to color most synthetics are in concentrations too low, or valence states too weak, to be detected. For example, natural Spinels of any color (except very pale gems and some orange gems) show a weak to moderate magnetic response. They can be easily separated from synthetic Spinels, which are mostly inert, but occasionally very weak in blue synthetic Spinel colored by cobalt."
"Other examples are Indicolite Tourmaline and Verdelite Tourmaline, which are strongly magnetic and may drag. They can be separated from imitation gems made of synthetic Spinel or Glass, which are weak or inert. "
"Aquamarine is a variety of Beryl that can look like pale blue Topaz. Conveniently for us, Aquamarine is weakly to moderately magnetic, and can easily be separated from Topaz, which is always inert"
"Tanzanite can be mistaken for Iolite, a less valuable gem with similar color. However, Iolite is pigmented by iron and strongly attracted to a N-52 magnet. Tanzanite shows no magnetic response. "
http://gemstonemagnetism.com/
"Synthetic gems and imitations gems like glass are mostly inert or weak, and can often be separated from natural gems. The metallic dopants used to color most synthetics are in concentrations too low, or valence states too weak, to be detected. For example, natural Spinels of any color (except very pale gems and some orange gems) show a weak to moderate magnetic response. They can be easily separated from synthetic Spinels, which are mostly inert, but occasionally very weak in blue synthetic Spinel colored by cobalt."
"Other examples are Indicolite Tourmaline and Verdelite Tourmaline, which are strongly magnetic and may drag. They can be separated from imitation gems made of synthetic Spinel or Glass, which are weak or inert. "
"Aquamarine is a variety of Beryl that can look like pale blue Topaz. Conveniently for us, Aquamarine is weakly to moderately magnetic, and can easily be separated from Topaz, which is always inert"
"Tanzanite can be mistaken for Iolite, a less valuable gem with similar color. However, Iolite is pigmented by iron and strongly attracted to a N-52 magnet. Tanzanite shows no magnetic response. "
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