Magma Gold
Magma Gold is a Brazilian Precambrian migmatite (DNSA #6176/#6177), sold commercially as granite. Dark base with irregular golden/brown swirls. SC s8856 provides technical ranges: density 2630–2750 kg/m³, compressive 170–220 MPa, flexural 12–18 MPa, water absorption 0.15–0.30%. Acid-resistant silicate rock. Multiple DNSA-named varieties exist (Magma Gold/Siena, New Magma Gold).