• Register

Information for users from the old Q&A site
If you have an account from our old Q&A site, your account was transferred over, but you need to reset your password and confirm your email address.
Reset Password here
Confirm Email here

2,237 questions

3,912 answers


126,787 users

Perfectly round, semi flat white rock that will not break, what is it?

0 votes

What can this rock be?

asked Feb 26, 2012 by Kelly (200 points)

8 Answers

0 votes

Can you post a picture?

answered Feb 26, 2012 by yohaas (1,030 points)
0 votes

Still tring to up load pic, any suggestions

answered Feb 26, 2012 by Kelly (200 points)

Sorry that you are having trouble. You can email it to me at [email protected] or upload it to an image sharing site like flickr.com or imgur.com, then put the link here.

0 votes

Two photos sent by the original poster:

alt text

alt text

answered Feb 27, 2012 by yohaas (1,030 points)
I found the exact same thing but several of them
0 votes

There are many stones that this could be. It's an usual color for a gemstone - plain white. It could be anything, but is most likely quartz or ivory. Any way for you to test the hardness?

answered Mar 1, 2012 by hershel (52,800 points)
0 votes

I've had the stone 45 yrs and in my teenage yrs I hit it with a 8 lb sledge hammer, put it in a vice, and threw it on the concrete . It won't even chip. Our son in law has a tungsten carbide steel wedding band, the stone scratch his ring, so much so that they replaced it with the warranty .

answered Mar 1, 2012 by Kelly (200 points)
0 votes

Hardness isn't dependent on its ability to withstand pressure and chip - that property is tenacity. For information of what I mean by hardness, please take a look at this article: http://www.minerals.net/resource/property/Hardness.aspx

If you can somehow determine the hardness or take it to a professional to do that, it will be easier to more positively identify it.

answered Mar 5, 2012 by hershel (52,800 points)
0 votes

Did you ever find out what they are? I have two similar to them and have no clue what they are. My great grandfather found one when he was laying pipes under ground 50years ago and my friend found one in a lake about 12 years ago. IMG_4257.JPG

answered Oct 19, 2015 by Jgul
I found two that were similar while out hiking. (Both were near each other, although I found them years apart). They were both completely buried in the woods, except for a tiny white speck sticking out of the ground. Mine aren't flat though. They are both perfectly round spheres. THAT is what perked my curiosity with them... So I brought them to our local university (Olivet) and talked to the professor who is the head of the geology department. They took them for a week, did some study's, and when they returned them to me, everyone they talked to seemed to agree it was nothing more than "chert"... A simple white rock, that was stuck in a whole for thousands of years, and rounded off by erosion.

If you want to compare to mine, feel free to contact me, and i'll get you a picture.

I live in an area that use to be home to many Indian tribes, and someone at the university mentioned maybe they were a tool the Indian my have used them as a hunting tool, similar to a sling shot.
So, if it is chert, it is a variety of SiO2. Quartz, agate, flint chalcedony, they are all silicates. Very hard, 7.0 on the Mohs scale. Chert when you break it will break in a concave piece, it does not crack but will chip, our flint-knapping progenitors created very sharp blades and tools using other rocks to strike them. The fractures are called conchoidal fractures. It should feel almost waxy. The ways the different silicates form make them into the varieties of rock we know them to be.

I'm not sure if this image shows up or not? Its a link of my rock on facebook
0 votes
i cant figure out how to post a picture, but i wish i could. i found the EXACT same round white stone in the original 2 pictures. i literally cant stress enough how its the same size, shape, and color from both angles. i wanna see if its unbreakable but im not gonna risk breaking it its too cool. i found it on the coast of massachusettes a few days ago. again i wish i could post pics of it
answered Nov 7, 2017 by wayne