The thin rhomb t has four corners with angles of 36, 144, 36, and 144 degrees.
From the en.wikipedia.org
The t rhomb may be bisected along its short diagonal to form a pair of acute Robinson triangles.
From the en.wikipedia.org
The thick rhomb T has angles of 72, 108, 72, and 108 degrees.
From the en.wikipedia.org
Rhomb porphyry is an example with large rhomb shaped phenocrysts embedded in a very fine grained matrix.
From the en.wikipedia.org
Rhomb porphyry is a volcanic rock with gray-white large porphyriticrhomb shaped phenocrysts embedded in a very fine grained red-brown matrix.
From the en.wikipedia.org
More examples
Rhombus: a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
In geometry, a rhombus or rhomb is a quadrilateral whose four sides all have the same length. The rhombus is often called a diamond, after the diamonds suit in playing cards, or a lozenge, though the latter sometimes refers specifically to a rhombus with a 45° angle.
Looks like a squished box, short form for rhombohedral, resembling a prism with six four-sided faces