What geometric shape at the center of Saba's flag contains a yellow star?

The geometric shape at the center of Saba's flag that contains a yellow star is a white diamond.

Saba's flag uses four triangular sections: red triangles at the top and blue triangles at the bottom. A white diamond sits in the middle, and its yellow star represents the island itself. The surrounding red, white, and blue colors also reflect Saba's connection to the Netherlands.

The flag was adopted on December 6, 1985, which is Saba's national day. Its designer was Edmond Daniel Johnson, an 18-year-old Saban whose design was selected from 130 proposals. The white diamond is easy to confuse with a square viewed at an angle, but its official description identifies it as a diamond.

Saba is a special municipality of the Netherlands in the Caribbean. Before adopting its own flag, the island used the Dutch flag; an older local symbol reportedly included a green cabbage to express Saba's independent spirit.