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English definition of “semi-precious”

semi-precious

adjective [before noun] uk   /ˌsem.iˈpreʃ.əs/ us  
A semi-precious stone is one that is used for making jewellery but is not extremely valuable: Jade and turquoise are semi-precious stones.JewelleryPrecious and semi-precious stonesTypes of rock
(Definition of semi-precious from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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