EditorialFrog Pendant, 4th?8th century, Costa Rica, Atlantic Watershed, Jadeite, H. 2 x W. 1 9/16 x D. 7/16 in. (5.1 x 4 x 1.1cm), Stone-Ornaments, The color of Mesoamerican jade, often called greenstone, ranges from a near white to a deep blue green. Associati...