If you are referring to the Sports-team, it is a name and most people would just say "Diamondbacks" although the last "d" would be sort of silent, because of Spanish pronunciation conventions.
If you literally wish to say "diamond backs" as in "backs" made up of "diamonds" (in the same way that "silk scarves" are "scarves" made up of "silk"), you can say "espaldas de diamantes".
vendedor del diamante
When you are talking about suits of cards, the word "diamante" is used.
"Real diamond" in Spanish is "diamante real". It is pronounced "dee-ah-MAHN-tay ray-AHL". Please see the Related link below for confirmation of the translation.
The character of the defensive diamond in soccer refers to a tactical formation that features four defenders arranged in a diamond shape. This setup typically includes two center-backs and two full-backs, with the full-backs positioned wider and the center-backs more centrally. The diamond shape provides a solid defensive structure and allows for effective coverage against opposing attacks, while also facilitating quick transitions to offense. Coaches often utilize this formation to enhance defensive stability and support midfield play.
Arizona Diamond backs,
Midre Cummings
diamante
diamond
diamond
well in greek its διαμάντι thia-man-dee
Diamante.
I say yes a diamond can be a trapezoid.