Curious Metallic - Gold Leaf - 5" X 7" Heavyweight Blank Greeting Card Sets - 25 Cards & Envelopes 25 Blank Greeting Cards & 25 Envelopes. Envelope: 118 GSM (32/80lb Text). Greeting Card: 111LB. COVER (300 gsm) Heavyweight Metallic Cardstock. COLOR: Gold Leaf. Finish: Metallic.