Identity Help : I have a stone that checks as diamond, could this still be faulty?

I found this on the side of the road. It has flat cracks in it too. What are the chances that it really is diamond

Diamond Clarity

Miner's Shares Surge After It Finds 100-Carat Diamond

Moissanite Stone 0.5CT to 3CT White D Color VVS1 Clarity Moissanite Loose Diamonds CHINALUSTER 3Excellent Round Cut Loose Gemstone for Jewelry Making,Engagement Ring Pendant Necklace Earrings with : Clothing, Shoes

Professional Diamond Tester Gem Tester Pen Portable - Temu

Do Lab Diamonds Test As Real Diamonds: Three Tests To Know, 47% OFF

5 Ways to Tell if a Diamond is Real - wikiHow

Any of these diamonds look fake? Ring under UV light. : r/Gemstones

Identity Help : Diamond??

Synthetic diamond - Wikipedia

How to tell if my rock/stone/is a natural diamond - Quora