semi-precious stone; ornamental stone
Refers to stones used for decoration, such as in jewelry, gardens, or architecture. Often implies stones that are not precious gems but are valued for their appearance.
This ring is set with small semi-precious stones.
We laid ornamental stones in the garden to create a Japanese-style atmosphere.
Compound of 飾り (decoration) and 石 (stone). The exact historical derivation is uncertain, but the word transparently means 'decorative stone'.