BEAUTIFUL PATTERN ROSETTE JASPER STONE THIS IS A LARGE STONE WITH GREAT HIGH POLISH

WEIGHT : 90.60 CTS 

SIZE  MM: 39 X 40 X 6

  ( 6 MM IS APPROX 1/4 INCH )

CODE : G23

Jasper is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. Patterns arise during the consolidation process forming flow and depositional patterns in the original silica rich sediment or volcanic ash.Hydrothermal circulation is generally thought to be required in the formation of jasper.^{[citation needed]}

Jasper can be modified by the diffusion of minerals along discontinuities providing the appearance of vegetative growth, i.e., dendritic. The original materials are often fractured and/or distorted, after deposition, into myriad beautiful patterns which are to be later filled with other colorful minerals. Weathering, with time, will create intensely colored superficial rinds.