Chrysocolla preformed rough slab, 27x40x5.5mm, rare, blue green (rs81092)
Chrysocolla, blue green rough slab
Location: Unknown, purchased rough from an estate sale. Can't find any reference to it on the internet. A banded white and blue-green Chrysocolla has come from Bisbee, Arizona.
Material: Natural blue green, white and black Chrysocolla.
Characteristics: Preformed rough slab to make it easier for you to cab or finish as a specimen, natural, rare material, blue green with white and black dendrites. No pits, some surface lines that might disappear when you finish the slab. This is going to make a beautiful cab for designer jewelry or finish and keep as a specimen. The hardness is 2-3, it takes a nice luster polish. I suggest you finish it with 600 and then polish.
The white matrix is a mystery, I can't find anything on the internet that tells me what the white matrix is. Turquoise is found with Chrysocolla and there is material called White Buffalo which is a calcite that has morphed into minerals called Dolomite or Aragonite, maybe that's what this is.
Approx size: 27 x 40 x 5.5 mm, Weight: 53.5 ct.
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Preformed slabs: I try and remove all or most of the pits and open fractures to give you a more acceptable slab. I also try my best to smooth out all the edges and the front and back.
Finishing purchased slabs: My recommendations are for you to start with 320 diamond grit and finish with 600 grit before polishing. I have created several posts that show how I create cabs, see my website blog on Designsbyshirl.
My pictures: I use a full spectrum 45 w light bulb - photography photo CFL 5500K. It's a daylight balanced pure white light.
My first 2 pictures (front and back) show items wet, this brings out the colors you should see in a finished product. Other pictures show items dry, this should show imperfections (small cracks or pits) if there are any. Contact us if you have any questions. Translucent items will have at least one picture taken with a backlight.
An 18 mm dime or 24mm quarter and 10 mm background squares in some pictures should help you with image sizing.
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