Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[JJRO]

Found this forum and am impressed with the level of knowledge! Hopefully, you can help send me down the right path.
Here's the first of a few:
I do not know the origin of this. It's 59.6 grams. It appears a bit more red than the photos.
I was told it is a raw ruby - but it lacks the typical hexagonal geometric corundum shape. Thanks in advance for any insights!

[Barclay]

Carnelean?

[hummingbirdstones]

Second carnelian.

[catmandewe]

I third Carnelian.

[Slabbercabber]

The only way to know is do some tests.  The most diagnostic would be to see if it will scratch quartz.  (agate or jasper)  I agree, it looks like carnelian.

[ileney]

I’m puzzled. I could swear I see bubbles in that first photo.

[lapidaryrough]

     bubbles,  their casting marks from the Pillow basalt flow. Gas pockets.
   Calcite crystals form first then silica later in the formation. why a lot of agate from Lebanon Oregon and the NW. area has cast markings from the largest pillow basalt flow in the world with a 70% silica content. for the rock pile out back. Oregon the best to be a native rock hound. .  you see impression of the calcite imprinted in the agate.

   Brazilian agates have a lot of calcite holes in them.  I have 20 listing on my Brazilian agate  page. of hollow geode Brazilian agates.

[JJRO]

Thanks for the prompt responses! I think some external/surface occlusions might be lighting up to look like bubbles.
I have a few more interesting samples I'll try to upload today. Thanks again!

[Lydia]

Thanks for the prompt responses! I think some external/surface occlusions might be lighting up to look like bubbles.
I have a few more interesting samples I'll try to upload today. Thanks again!

It could also be Mexican opal

Sent from my LG-H811 using Tapatalk

[Lydia]

Thanks for the prompt responses! I think some external/surface occlusions might be lighting up to look like bubbles.
I have a few more interesting samples I'll try to upload today. Thanks again!

It could also be Mexican opal

Sent from my LG-H811 using Tapatalk

But maybe too heavy?

Sent from my LG-H811 using Tapatalk

[Barclay]

if it is significantly softer than quartz Mexican opal is a good guess based on color.

[JJRO]

Any density test I can perform before having it evaluated? Thanks for the input! My goal is to at least have a good idea what to call these before getting an evaluation. I know just enough to make me look ignorant.😀

[JJRO]

Found this interesting tip for determining specific density - I'll give it go and report back
http://www.johnbetts-fineminerals.com/jhbnyc/articles/specific_gravity.htm

[Slabbercabber]

Took me a moment to figure out how this works but it's pretty ingenious.  I've never seen this one before.

[JJRO]

Specific gravity test came back at 2.818
Beryllonite 2.82
Carnelian 2.82 **
Chalcedony 2.82

Thanks again -