Australian Black Nephrite Jade Smooth and Curvy "Strong Heart" Necklace. Exquisitely Hand Carved Contoured Australian Black Nephrite Jade. BLACK JADE is a symbol of STRENGTH SIZE: 3.4cm (34mm) W x 3.2cm (32mm) L / INCHES: 1.3" W x 1.2" L* SHIPPING is a Flat Rate per order (not per piece). EXPEDITED shipping: orders will ship the same day whenever possible, or by the next business day, via a Second or Third Day Guaranteed Service through the US Postal Service or Fedex.