Entry from British & World English dictionary
Definition of hardstone in English:
Precious or semi-precious stone used for intaglio, mosaic work, etc.
- Since the art of cameo cutting is such a difficult one, these hardstone royal images were regarded as the most prestigious of gifts, reserved either for a close relation of the monarch or a person of the greatest political importance.
- Scagliola, an ancient Roman technique revived in the renaissance, is in essence the imitation of marble or hardstone with a powdered crystalline version of gypsum, which is mixed with glue, coloured and polished.
- Prague once again became a great centre of hardstone - not to mention rock crystal - production in the later sixteenth century by virtue of the patronage of Emperor Rudolph II.
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