Is this an Asbestos fibro?

Hey guys, I went down to our subfloor yesterday and discovered this little piece among the rubbles:
https://imgur.com/a/tVsNdFm

Just wondering if there might be asbestos in there or not as we’re really worried at the moment. It seem to have a honeycomb/circular shape on top but have mostly worn off.

The previous owner did a renovation to the bathrooms and kitchen and the lazy tradies just dumped a lot of construction wastes down there. (bricks, tiles, timbers etc.)