Patina:
The patina is a mix of CuO(s) and CuCO3(s), and can be briefly explained by understanding how the oxygen (O2(g)) in our atmosphere interacts with a given atom of an element(2Cu(s)) or molecule/formula unit within the base metal (bronze) to produce the green-blue like surface coat: 2Cu(s) + O2(g) -> 2CuO(s).
Terms of sale:
This item does not come with the blackbox background, and will only include the spearhead as shown in the picture, properly wrapped and protected as to ensure no damage is incurred during shipping. Domestically I will also include free shipping, and a 30 day return policy. Internationally, I will require a flat $16.99 shipping fee, and cannot provide returns. Feel free to message me upon any questions.
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