jacinth | Jacinth - The Forgotten Realms Wiki - Books, races, classes, and more the fifth onyx, the sixth ruby, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth turquoise, the eleventh jacinth, and the twelfth amethyst.Revelation 21:20
Emerald [N] [S] Heb. nophek ( Exodus 28:18 ; 39:11 ); i.e., the "glowing stone", probably the carbuncle, a precious stone in the breastplate of the high priest. It is mentioned ( Revelation 21:19 ) as one of the foundations of the New Jerusalem. The name given to this stone in the New Testament Greek is smaragdos, which means "live coal." http://www.biblestudytools.com/dictionary/emerald/ Emerald Crystal Photo by Parent Gery CC BY SA 3.0 via Wikimedia Commons
Brownish-red to red-orange Carnelian is a variety of chalcedony or cryptocrystalline quartz. The word Carnelain comes from the Latin word carneus, meaning 'flesh coloured'. The distinctive red-orange color of carnelian is a result of trace amounts of iron. Carnelian is one of the oldest known gemstones. It was widely used in ancient Rome to make insignia and seals for imprinting on letters or important documents because hot wax does not stick to carnelian.
Amethyst is the third stone in the third row of the High Priest’s breastplate (Ex. 28:19) and the twelfth stone listed in the foundation of the New Jerusalem (Rev. 21:20). The Hebrew word for amethyst, ahlamah, literally means “dream stone,” and it was thought that it induced pleasant dreams.