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| Joined: | Thu Apr 16th, 2009 |
| Location: | Arctic, Norway |
| Posts: | 5821 |
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"..sapphire crystal, a material that is so hard that it will only scratch if it comes into contact with a diamond or another crystal."
And "the only two materials that can scratch crystal are other crystals and diamonds"
Is well known to be rubbish... A sharp stainless steel pointed tool/object or even better in wolframe/tungsten is scratching any sapphire material: Natural or hydrothermal grown.
It's just a question of pressure applied to it and believe me , even a woman can scratch her sapphire ring on a steel drawer corner.
Watch crystals are often getting damaged this way as well as jewelry sapphires.
I would believe that they knew them material better than that, or are they trying to sell it over it's capacities???
But the reading about them factory was interesting.