Even for a skilled gem cutter, cutting emeralds presents a special challenge, firstly because of the high value of the raw crystals, and secondly because of the frequent inclusions.

• 即使是专业的宝石切割师,切割祖母绿也是极具挑战性,因为祖母绿的原石不但是极昂贵的,且含有大量的内含物。