Can someone be able to tell something about this rock. The black stone one can scratch a sapphire crystal of a watch. Your valuable comments are wisdom to be treasured. Thanks everyone.
Post subject: Re: Need some possible identifications
Posted: Tue Oct 16, 2018 12:47 pm
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
I suspect you are hoping, grasa, that you have discovered diamonds. Bring your unknowns to someone who has a thermal diamond tester. Most jewelry stores have them. Ask them to test your curiosities.
It should only take a couple of minutes. It will identify a diamond, even a black one. If your specimens are not diamonds, the gadget will not identify what it may be. But you will know, they are not diamonds.
Post subject: Re: Need some possible identifications
Posted: Tue Oct 16, 2018 1:09 pm
Established Member
Joined: Mon Oct 15, 2018 10:47 am Posts: 19
Barbra Voltaire wrote:
I suspect you are hoping, grasa, that you have discovered diamonds. Bring your unknowns to someone who has a thermal diamond tester. Most jewelry stores have them. Ask them to test your curiosities.
It should only take a couple of minutes. It will identify a diamond, even a black one. If your specimens are not diamonds, the gadget will not identify what it may be. But you will know, they are not diamonds.
Yes thank you. I actually ordered 1 already and I am waiting for it to arrive. I am just so curious that I can't wait.
Post subject: Re: Need some possible identifications
Posted: Tue Oct 16, 2018 1:12 pm
Established Member
Joined: Mon Oct 15, 2018 10:47 am Posts: 19
Isi wrote:
Are you 100% sure your watch glass is made of synthetic corundum ?
On the back case of the watch it says sapphire crystal. I tried scratching it with a file then and sand paper, there was no effect. It was slippery. Ty
Post subject: Re: Need some possible identifications
Posted: Tue Oct 16, 2018 1:17 pm
Established Member
Joined: Mon Oct 15, 2018 10:47 am Posts: 19
Barbra Voltaire wrote:
I suspect you are hoping, grasa, that you have discovered diamonds. Bring your unknowns to someone who has a thermal diamond tester. Most jewelry stores have them. Ask them to test your curiosities.
It should only take a couple of minutes. It will identify a diamond, even a black one. If your specimens are not diamonds, the gadget will not identify what it may be. But you will know, they are not diamonds.
Given that the black one is not a diamond, then what it is, given the hardness?
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