JOTW Silvertone 4.5mm Hollow Franco Chain Necklace (N5-W1XF-I6HU) The 30 inch necklace weighs 30.45 Grams. The 34 inch necklace weighs 32.50 Grams. The 36 inch necklace weighs 35.45 Grams. Great Quality Jewelry! Ships from USA, Guaranteed!