Feldspar (plagioclase series) · Oligoclase Feldspar

Sunstone (Oligoclase)

Oligoclase sunstone glitters red-gold from aligned hematite platelets, classically from India, Tanzania and Norway. It is the affordable aventurescent feldspar - distinguishable from green aventurine quartz and glass goldstone in a moment under the loupe.

Colour
orange

Transparency
Variable (transparent to opaque)

RI
1.537–1.547

SG
2.62–2.67

Mohs
6.0–6.5

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