Groups of sea bamboo shoots that look like clusters of grapes - marine bivalves Insect body: a nest of sea bamboo shoots, invading from the cracks on the back of amber, forming a distribution like bunches of grapes. The appearance of marine bivalves in amber reflects that Burmese amber mines once drifted into the sea and were buried again by mountain soil, which is very interesting. Location: Myanmar Era: Cretaceous (1.45 to 66 million years ago) Amber body: gold amber, with leaks and cracks on the back. Size: approx. 28/18/6, 2 grams [Photos] The photos are all taken at macro magnification. Please see scale images for actual size of item. [Must Read] Burmese amber is a natural product. Blemishes, ice cracks, and plant debris are all hallmarks of pure natural amber.