Gemmuloborsonia didyma is a species of sea snail, a marine gastropod mollusk in the family Turridae.

[1][2] The length of the shell attains 20.3 mm (0.80 in), its diameter 7.0 mm (0.28 in).

This species occurs at depths between 280 and 500 m (920 and 1,640 ft) in the Arafura Sea and off the Tanimbar Islands, Indonesia.

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