🔎 UNIDENTIFIED Need help identifying small stones on counter marble

[sieglufer]

Hello, I need help to identify the small stones/crystals that are on the counter marble, I'd like to find matching stones but don't know where to start.
At first I thought they were calcite, but I think they are not calcite.
Thank you.

 

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[fuss]

This looks like a man made material, the grey/clear shaped pieces are likely glass but could possibly be Quartz.