Stromatolite | Russia | Pre-Cambrian 1.3 byo metal Citrine or Heat-treated amethyst (HTA)

Citrine or Heat-treated amethyst (HTA) typically shows a deep

This item is 5" x 2

light green color

5” and weighs 7

This pale green prehnite showcases classic botryoidal formations with smooth

Stromatolite | Russia | Pre-Cambrian 1.3 byo metal Citrine or Heat-treated amethyst (HTA)Precambrian stromatolites from the Torgo River Basin in Yakutia, Siberia, Russia, are ancient, fossilized microbial mats dating back approximately 1. 2 to 1. 3 billion years. These Mesoproterozoic, often polished specimens from the Torgo Formation represent early life forms, showing intricate, banded, and dome shaped structures. They are highly prized by collectors for their, often showing deep, earthy colors. This item is 2. 25" x 1. 25" and weighs