5192. huakinthos -- hyacinth
... Transliteration: huakinthos Phonetic Spelling: (hoo-ak'-in-thos) Short Definition:
jacinth Definition: jacinth, a precious stone of the color of hyacinth. ...
/greek/5192.htm - 6kRevelation 9:17
And thus I saw the horses in the vision, and them that sat on them, having breastplates of fire, and of jacinth, and brimstone: and the heads of the horses were as the heads of lions; and out of their mouths issued fire and smoke and brimstone.
Nave's Topical Index—AKJV

Revelation 21:20
The fifth, sardonyx; the sixth, sardius; the seventh, chrysolyte; the eighth, beryl; the ninth, a topaz; the tenth, a chrysoprasus; the eleventh, a jacinth; the twelfth, an amethyst.
Nave's Topical Index—AKJV