Prothalotia ramburi, common name Rambur's jewel top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

It is crimson with narrow radiating whitish flames on the upper surface, usually extending to the periphery, and an umbilical tract of red and white tessellated.

Fully adult examples often show the light flames only upon the upper whorls.

The whole surface is finely spirally lirate, the lirae about as wide as the interstices, which are delicately obliquely striate.

The peristome is edged by a row of crimson dots, with a porcellaneous internal thickening which is finely crenulate.