Tag Archives: quartz crystal

Isabel Silveira

Maria Isabel Cintra da Silveira was born in São Paulo in 1965. She graduated from FAAP in 1987 as a Business Administrator specializing in Marketing, before working for three years in the financial markets. In 1989, great inner changes saw …  Continue reading

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Quartz Crystals

The book allows the reader to quickly and easily identify an array of quartz crystals and become familiar with their distinctive features. Colourful pictures bring the reader up close to the beauty and diversity of the quartz crystal family, illustrating specific details of each crystal formation described.  Continue reading

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