Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Wed May 10, 2017 2:29 am
New to the Forum or The Quiet Type
Joined: Tue May 09, 2017 12:07 pm Posts: 6
Hi and thank you a lot for your response!
I did this test with a needle yesterday and repeated it today again. The needle pierces the surface and regarding the smell, it feels like something in the middle of piney odor and plastic odor.
I used to work with amber in my life, and I know it can be different. I wonder if it can be some kind of amber, maybe different stone or it can be plastic? I doubt it is plastic because of the surface and how it feels, but that's why I am here to figure this our so thank you a lot for your professional opinion!
Also, if to look on the light, I can see little bubbles inside.
I attach one more picture of the stone.
Waiting impatiently to hear professional opinions! Thank you a lot!
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 2:57 pm
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
Stephen raises an excellent thought. Make a bucket full of supersaturated salt water....perhaps it would be easiest to start with a bucketful of ocean water if you are still by the coast. You'd still have to add additional salt as ocean water is an unsaturated solution in regards to NaCl.
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 2:58 pm
New to the Forum or The Quiet Type
Joined: Tue May 09, 2017 12:07 pm Posts: 6
Do you think it can be copal? By the way, I am quite sure it is not glass since if to burn a little piece, it makes a smoke/fume. I was thinking if it could be a plastic, but it really doesn't feel like that neither.
Any thoughts on what it can be? I will appreciate every opinion!
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 3:19 pm
Established Member
Joined: Wed Jan 18, 2017 1:08 pm Posts: 41 Location: Bergisches Land
Hello, Pickus wrote:I did this test with a needle yesterday and repeated it today again. The needle pierces the surface and regarding the smell, it feels like something in the middle of piney odor and plastic odor. I would think if the Needle pierces the surface, Glass is not a likely Option.Looking at the Picture, Amber isn't very likely either. Any chance that it might be Copal ?? best of luck Gemse
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 3:49 pm
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
Would we expect to find copal on the beaches of Spain?
Also...Pickus, let's be a little more proactive. Make that supersaturated salt solution and report back. You could just chip of a small bit and make a supersaturated glass of water.
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 4:22 pm
New to the Forum or The Quiet Type
Joined: Tue May 09, 2017 12:07 pm Posts: 6
Thanks everyone for your opinions! I will do the test today and can't wait to see what will happen. I will write here as soon as I find enough salt for the test
Post subject: Re: Found a huge yellowish crystal on Mediterranean coast Sp
Posted: Thu May 11, 2017 5:45 pm
Gold Member
Joined: Wed Jan 23, 2013 5:29 pm Posts: 1047 Location: Paris
150 grams of salt per litre of fresh water. 15 grams of salt per 0,1 litre of fresh water.
The test works fine - although a little percentage of plastic items tend to float too. Especially since this sample seems to be full of holes which might retain air. Make sure to empty these cavities of their air bubbles when you do the test. Glass will sink.
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