Topaz D.35797 Click to enlarge image
Brazil 12 x 17.5 x 17.5 cm Registered 1941 D.35797 Image: Stuart Humphreys
© Australian Museum

This huge, clear topaz crystal weighing 5.5 kg has a perfect and sharp crystal shape (orthorhombic crystal system) with a diamond-shaped cross-section. It was mined from a prominent Brazilian pegmatite deposit. Its chemical composition is aluminium fluorine silicate.

Specimen details

  • Origin


  • Size

    12 x 17.5 x 17.5 cm

  • Date

    Registered 1941

  • Collection number


This specimen has been on continuous display in successive mineral exhibitions since its acquisition in 1941 through an exchange with Warner & Geiger, a Californian company supplying mineral specimens and noted for its pegmatite minerals.

Topaz D.35797
Brazil 12 x 17.5 x 17.5 cm Registered 1941 D.35797 Image: Stuart Humphreys
© Australian Museum

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