Type material: Holotype (15.0mm wide x 11.1mm high) deposited at Paris National Museum of Natural History, France with Registration No: MNHN-IM-2000-3 8131.
Diagnosis: The new species is characterized by robust shell, swollen radial ridges, lateral side nearly parallel to shell axis and sutural ramp of body whorl perpendicular to shell axis.
Description: Shell medium-sized for the genus, slightly trochoid, robust and thick. Spire tall and stepped, sutures deep. Shell height 74.0% of width and aperture height 64.9% of shell height. Body whorl slightly inflated at basal side with strongly angulate shoulder and sutural ramp perpendicular to shell axis. Sculpture consists of many broad, elevated, granulose, widely-spaced radial ridges, crossed by closely-spaced spiral ribs at sutural ramp of body whorl; lateral side nearly parallel to shell axis and sculptured with two widely-spaced spiral ribs with many riblets in interspace. Aperture wide, polygonal in outline with external ribs well visible within, outer lip angulate and moderately thick. Basal side with broad, closely-spaced spiral ribs. Columella solid, highly calloused, undulate and oblique. Umbilicus small, deep and bordered by a broad spiral band which is sculptured with many closely-spaced riblets. Color red with whitish stripes at dorsal side and white columella. Etymology: The new species is named in honor of Nguyln Ngoc Anh Duong from Vietnam for her interest at Vietnamese shells.

The new species differs mainly from Gibbula corallioides Locard, 1898 in (1) lateral sides of body whorl not concave, (2) shoulder of body whorl not strongly angulate, (3) spiral ribs granulose and not wavy, (4) aperture narrower and nacreous with external pattern visible within, (5) umbilicus less covered by columella, (6) columella very undulate, (7) sutures of spire whorls not polygonal in outline, (8) apex smaller, (9) larger in adult size, 15mm versus 9mm wide, (10) different localities, Vietnam versus Cape Verde, Sao Vicente, off West Coast of Africa.

Type locality: Phan Ri area, Tuy Phong District, Binh Thuan Province, Central Vietnam. Habitat: On sandy bottom at 15-20m.