Fossil stone

Rare un-dated more than 500 years ago these creatures walk the earth we walk on today. Different ? To date no one could verify the Fossil origin and it's character of what this Fossil is, it's patern are visually seen as a sea creature but it could have been a pre-data frog or snake family entity. The pressure had been significantly high in gravational force, as it's skin and eyes have been turned into a shining small diamond resemblance. You can clearly see the skin molded on the surface of the stone, also inside the cracks you can see small glass diamond properties pieces and also with a magnetic microscope you can see blod veins. This can be something very very rare and can open the secrets of how animals and others type of creatures walk on earth millions of years ago. This can be auctioned at a very high price, but I don't Have the time for it and am in need of money, so if you are interested you can give me a price. You can also go to museum and have it appraisal. I was offered 5000 but I rejected the offer which I regret now.