Total estimated gold ever mined: 171,300,000 kg
1 kg of gold = $39,847
Market cap: $6,825,791m
Total bitcoins ever mined: 16,193,587
1 btc = $1,249
Market cap: $20,230m
You should postpone the 'parity party' until 1 BTC = $421,512, or when it's value equals the value of ~10.6 kg of gold.
sources: google + coinmarketcap
For "parity" a BTC would need to be about 39,847 * 171,300,000 / 16,193,587 = $421,511
So not quite there yet.