Translucent precious stone (6)

I believe the answer is:

zircon

(Other definitions for zircon that I've seen before include "Gemstone, maybe jacinth" , "Tetragonal mineral" , "Mineral such as jacinth" , "Crystal-like semi-precious stone" , "Bluish-white gem cut from translucent mineral" .)

I've seen this clue in The Sun.

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