Florence crystals

Flor·ence crys·tals

(flōr'ĕns),
brown rhombic crystals formed at the interface between a drop of Lugol solution and a drop of fluid that contains semen; not a specific test for the latter.

Florence,

Albert, French physician, 1851-1927.
Florence crystals - brown rhombic crystals formed at the interface between a drop of Lugol solution and a drop of fluid that contains semen.