crystal class

(Chemistry) crystallog any of 32 possible types of crystals, classified according to their rotational symmetry about axes through a point. Also called: point group

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CRYSTAL CLASS Phillips celebrates scoring against Peterborough earlier this month

FORTY TOWERS; THE PS110M SHOWDOWN 4 DAYS TO THE PLAY-OFF FINAL: C PALACE v WATFORD; Veteran Phillips must break Wembley jinx to take Palace back up to the Prem; EXCLUSIVE

Then I would sit under the shade of a willow tree, sipping from a crystal class while rereading Paul Auster.

Laura Davis - completing all those grand plans

A practiced eye can easily recognize that the new faces do not match the ones possible for the crystal class of scheelite, and a close examination with a handmagnifier clearly reveals the signs of filing and polishing.