REBIRTH COLLECTION › Onyx Bardo Necklace Silver Image 1 of 3 Image 2 of 3 Image 3 of 3 Onyx Bardo Necklace Silver £210.00 Handmade silver necklace with coffin shaped Onyx stone. Chunky 925 sterling silver chain approx. 20 inches. Purchase Added! Handmade silver necklace with coffin shaped Onyx stone. Chunky 925 sterling silver chain approx. 20 inches.