https://www.gia.edu/gems-gemology/fall-2023-gemnews-blackish-green-omphacite-jade
Blackish Green Omphacite Jade from Guatemala
A Guatemalan jade called yongchuliao has gained popularity among Chinese buyers.
blackishgreenomphacitejadeguatemala
https://www.gia.edu/gems-gemology/spring-2018-microworld-omphacite-chromite-bimineralic-inclusion-diamond
Omphacite and Chromite: A "Bimineralic Inclusion" in Diamond | Gems & Gemology
Two inclusions appear joined in a diamond host.
omphacitechromiteinclusiondiamondgems