gem

a precious stone that is very valuable and beautiful, such as a diamond or ruby

gema, joya

Collocations precious gem · valuable gem

• She wears a large diamond gem in her ring.

  Ella lleva una gran gema de diamante en su anillo.

one of two babies born at the same time from one egg or sperm, so they look exactly alike and have the same DNA

gemelo/a (de un huevo)

Collocations identical twin · monozygotic twin

• They are identical twins, but one is left-handed and the other is right-handed.

  Son gemelos idénticos, pero uno es zurdo y el otro diestro.

a person or thing that exactly matches another one in appearance or quality; a perfect match

pareja, gemelo/a (en calidad)

Collocations perfect match · exact duplicate

• The painting is a perfect gem of Renaissance art.

  El cuadro es una obra de arte renacentista perfectamente idéntica.