ὑάκινθος (hyákinthos|hoo-ak'-in-thos|noun|jacinth)
[Grk] ὑάκινθος LN: 2.41 GK: G5611 Hebrew: תַּחַשׁ‎, תְּכֵלֶת‎
Derivation: of uncertain derivation;
Strong's: the "hyacinth" or "jacinth", i.e. some gem of a deep blue color, probably the zirkon
KJV: -- jacinth.