Gabbro? Metallic rock id

[Happylioness]

I found this stone in my backyard in Georgia. The large piece pictured weighs 10.4 lbs. The larger of the two smaller pieces is 102 grams and the smallest weighs 30 grams. It is extremely hard and the breaks are very sharp. It is not magnetic. Can anyone tell me what it is or point me in the right direction? Blessings.

 

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[Eu_citzen]

Reminds me of chert or even rhyolite.