ToneVigelandNecklace, 1978. Silver, agate, coral 15 length Published October 23, 2012 at 870 × 753 in Attend the Smithsonian Craft2Wear Show Necklace by Tone Vigeland. 1978. Silver, agate, coral. 15” length. in The Jewelry of Tone Vigeland, 1958-1995 by Tone Vigeland