Table:
amethyst	$6.26/kg

tiger's eye	$6.96/kg

quartz	$7.21/kg

fool's gold	$7.51/kg

granite	$7.09/kg

calcite	$6.26/kg

topaz	$7.02/kg

I'd like to know the total number of rows and columns in the provided table. Show your final answer in the JSON format {"row_number": "m", "column_number": "n"}.

This table has 7 rows and 2 columns. Thus, the final answer is {"row_number": "7", "column_number": "2"}.