Blue Sapphire??

[aussiefossils84]

I have found another glass stone in the bay not sure if is glass though..

2.75 ct on digital scales
Has some damage to surface which looks like frosted glass from sand is it possible to be a sapphire if very old?
Florescent Green with UV looks like a clear rock with green when I put light on it.
Please help me identify

 

[WalnLiz]

Glass or heat treated topaz. Sapphire would take far to long to frost and the bezel mounting would have disintegrated well before a Sapphire would even scratch.

 

[Varts]

Don't look like a saph to me
But a better pic sitting on the lens of a small torch ,it may look different
If you sieve it with rocks it will go to the centre ,but so will the glass

 

[aussiefossils84]

Glass or heat treated topaz. Sapphire would take far to long to frost and the bezel mounting would have disintegrated well before a Sapphire would even scratch.

Fair enough, but has anyone been able to prove that?

 

[KiwiKaren]

Uh. Third time trying to reply! Dont know why

Here goes again....

You did the right thing photographing it in water but I cant see anything diagnostic in the pics. Sapphire shouldnt fluoresce under UV and it is exceptionally worn for a gemstone of that hardness. It is an imitation of some description.

The red stone is paste. You can see a bubble in it and it has rounded facet edges. These gems were moulded rather than cut so rounded 'facet' edges is a common feature on these.

Still cool finds though!

 

[aussiefossils84]

Uh. Third time trying to reply! Dont know why

Here goes again....

You did the right thing photographing it in water but I cant see anything diagnostic in the pics. Sapphire shouldnt fluoresce under UV and it is exceptionally worn for a gemstone of that hardness. It is an imitation of some description.

The red stone is paste. You can see a bubble in it and it has rounded facet edges. These gems were moulded rather than cut so rounded 'facet' edges is a common feature on these.

Still cool finds though!

Cool thanks,
I thought synthetic sapphires fluoresce? and rarely a natural will too? But im no expert..just reading the internet

 

[KiwiKaren]

Yup! Synthetics fluoresce but because of the title of your post I was assuming you were asking if it is a natural! - its been a loooong day :/

 

[aussiefossils84]

Yup! Synthetics fluoresce but because of the title of your post I was assuming you were asking if it is a natural! - its been a loooong day :/

Haha I wish it was real oh how wonderful that would be

 

[WalnLiz]

Glass or heat treated topaz. Sapphire would take far to long to frost and the bezel mounting would have disintegrated well before a Sapphire would even scratch.

Fair enough, but has anyone been able to prove that?

Take to your local jeweler and he would be able to do a refractive index test for you. Synthetic Sapphire is the same hardness as natural Sapphire and would similarly be just as scratch resistant.

 

[aussiefossils84]

Glass or heat treated topaz. Sapphire would take far to long to frost and the bezel mounting would have disintegrated well before a Sapphire would even scratch.

Fair enough, but has anyone been able to prove that?

Take to your local jeweler and he would be able to do a refractive index test for you. Synthetic Sapphire is the same hardness as natural Sapphire and would similarly be just as scratch resistant.

Thanks I think I will to be sure

 

[Lefty]

Nice find

Doubt it would be a sapphire though if it has frosted after it was faceted - I dig up sapphires with highly reflective faces still on them after being exposed to weathering for some 40-70 million years. But do get it tested.

 

[aussiefossils84]

I have just noticed with my loupe it has a residue film on top I scratched some away with finger nail but took a while,
Is there a way to get this off, as it looks pretty smooth underneath...possible??
Salt build up?
Also looks very clear inside.

 

[fossickeract]

Just soak it in Metho for half hour then wipe with clean cloth or tissue. A refractive index measurement at a jeweller or local gemclub is the only way to identify them.

 

[aussiefossils84]

Just soak it in Metho for half hour then wipe with clean cloth or tissue. A refractive index measurement at a jeweller or local gemclub is the only way to identify them.

Thankyou so much Damn I will have to wait till morning I don't have any here.
Will petrol do the same job?

 

[fossickeract]

No petrol will leave smearing I would stick to the metho.

 

[aussiefossils84]

No petrol will leave smearing I would stick to the metho.

hahaha lucky

 

[aussiefossils84]

Picture with LED light and black light.
Why did it light up dark green with LED light as shown in picture?

qqq

 

[Heatho]

100% it's not a Sapphire, looks like Fluorite to me. As the others said you need to get it tested. UV is not a test for Sapphire, though Rubies will but not all of them.

 

[KiwiKaren]

could be diffusion coated...

 

[Heatho]

Uv is not a test for natural untreated Australian Sapphire, I should have phrased it better.