This is the 10536th most frequent Spanish word.
costosa
Expensive.
In this sentence, 'costosa' describes the high price or value of the jewel.
Esta joya es muy costosa debido a los materiales utilizados.
This jewel is very costly due to the materials used.
Here, 'costosa' is used to denote that the investment required significant expenditure.
La inversión fue costosa, pero los beneficios son mayores.
The investment was expensive, but the benefits outweigh it.
In this context, 'costosa' refers metaphorically to the heavy consequences of the mistake, implying a costly outcome.