Cyclostrema tenera Jeffreys 1883 Granigyra tenera is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.

The thin shell is narrowly umbilicated.

It is semitransparent, lustreless, with nearly microscopic spiral stride, which are wanting on the base and replaced by a rugose or fretted appearance.

The color of the shell is pale yellowish white, with a faint greenish tinge.

[2] This species occurs in the Atlantic Ocean off Portugal.