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Among the five cardinal gemstones
The unusual matrix of the Pallasite is formed by the intrusion of molten metal into layers of Olivine
glass-topped riker display cases measuring 4 1/2" x 3 1/2"
04" showcase Cyclobatis fossil
Libyan Desert Glass - SOLD 1.007" geode Among the five cardinal gemstonesComet impact glass! 28,500,000 years old! In the southeastern spur of North Africas Great Sand Sea, there are several fields of luminous, yellow green glass known as Libyan Desert Glass (LDG). Due to the lack of any visible impact crater, the most likely source is a low density asteroid or comet airburst explosion leading to the fusion of silica rich sands roughly 28,500,000 years ago. This specimen is a 1. 007" chunk of Libyan Desert Glass. It is a
