Mighty and heaviest multicolored giant amber from Jambi (West Sumatra),...

Mighty and heaviest multicolored giant amber from Jambi (West Sumatra), Indonesia, approx. 23 million years old, perfectly cut, unique stone, the extraordinary colors are due to volcanic activities, the amber deposits were subject to high tectonic pressure in their formation history, Exposed to heat and ash particles, the molecular structure of the ambers was changed in such a way that they partially glow blue, especially under UV light, the transparent parts show a wonderful orange-brown colour, finely branched, varied light structures refine one of the largest exceptional stones even more, wonderful Exhibition exhibit, approx. 22.4x15.5x11.3cm, approx. 1718g, rarely on offer, museum