chatoyant
Concise Oxford English Dictionary © 2008 Oxford University Press:
chatoyant /ʃəˈtɔɪənt/
▶adjective (of a gem) showing a band of bright lustre caused by reflection from inclusions in the stone.
– derivatives
chatoyance noun,
chatoyancy noun.
chatoyance noun,
chatoyancy noun.
– origin C18: Fr., pres. part. of chatoyer ‘to shimmer’.
'chatoyant' also found in these Oxford entries:

