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then applying chemical patinas
Sourced in Bolivia
This item is 4” x 2” and weighs 7
it is mined for the production of sulphuric acid for the chemistry and fertilizer industry
Bornite ”Peacock Ore” black tourmaline then applying chemical patinasBornite is a copper iron sulfide mineral also known as peacock ore for its striking iridescent tarnish (blues, purples, reds) that develops on its fresh bronze brown surface as it oxidizes, making it an important copper ore, found in hydrothermal deposits, valued for copper extraction, and identified by its unique color change and metallic luster. This item is 2. 5 x 1. 5 and weighs 4. 95 oz.
US$ 23.00
US$ 40.00
US$ 32.00
