Posted by: frank Post Reply
Yes the iron content will take the serp to black. Washington has very fine gem grade yellow serp that I do not cut as it comes from an area with very high uranium content as well as an unusually nice red that is in very short supply.Many of the olive green serps have a muddy grey cast from elevated chlorite levels. Two serps I get near my house are greens with the typical being as dark as the dark serp inclusion in this 300 lb boulder.The bright green portion is very fine and very unusual.The dark area of the pendant is a black - maroon serp . The stone it is in is a rodingite and the white is grossular garnet. My favorite serp from Washington is a blue -green mix that is colored by copper.I will post some of those when I finish the next batch.
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