Blue lace agate coffin necklace. One larger 30mm blue lace agate coffin framed in blackened sterling silver. Untreated, all natural blue, lilac, white and fret banding! Suspended on 18â blackened sterling silver satellite chain. Blue lace agate is a rare stone that is becoming increasingly hard to find. It was believed to have been completely mined out, but a recent discovery in Brazil has brought forth new stones. Follow care card instructions. Necklace will arrive carefully packaged and ready for gift giving in our signature packaging. Images taken in indoor natural lighting. ð¤ thank you!