A red precious stone mentioned in the Bible (e.g. Exodus 28:17) and in classical writings, probably ruby or carnelian.‘And thou shalt set in it settings of stones, even four rows of stones: the first row shall be a sardius, a topaz, and a carbuncle: this shall be the first row.’
- ‘In the first chapter I discuss what the tribe of Reuben and the sardius stone symbolize.’
Late Middle English via late Latin from Greek sardios.
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