A BEAUTIFUL, oval section of opalized tree limb with glassy, intense black color and a thin rind of blue opal. One end has been sawed and polished, while the other end shows the bright, conchoidal fracture surface. A fine piece from the famous Virgin Valley of Nevada. Ex John Sinkankas Collection, which is a nice bonus! But, it is good on its own merits. 5.3 x 4.8 x 3.3 cm