Gilalite
São José da Batalha, Salgadinho, Paraíba, Brazil
An example of the mineral gilalite, it is a very rare hydrated copper silicate, included in quartz.
Gilalite quartz was only discovered in the 90s, in São José da Batalha, Salgadinho, Paraíba, Brazil, in the same area as the famous blue tourmaline "Paraíba", due to its exotic color by copper-containing minerals.