Silver Tone Keep Calm and Chive On Charm Necklace. Keep Calm and Chive On is approximately 0.82 x 0.75 x 0.11 (HxWxD) including loop. Keep Calm oval has an antiqued border and is topped with a crown. Same on both sides. inches (HxWxD). Silver plated necklace is 19 inches plus 2 inch extender chain. Lobster Claw Clasp. Beautiful fashion necklace makes a wonderful gift. PLEASE NOTE: Our products are lead safe, but are not intended for children 14 years and younger.