Of Iacincto. chap. 54.
IAcinctus is a bliew stone some deale, & nigh of the coulour of a Saphire, and hath that name of his owne coulour, as Isido. saith. The stone Iacinctus that is found in Ethiopia is best, and is not too cléere, neither too dim, but meane & tem∣perate betwéene twaine, shining. Isidore saith, this stone shineth not alwaye like, for in cléere wether it is cléere before the eien, and in darke weather it is dim and darke. Isidore saith, in the mouth it sée∣meth colde, if it be therein, and is most hard to graue in. Neuerthelesse it maye be grauen and written, and marked with the stone Ad•nae, as Isid. saith. Diosco∣rides sayeth, that the stone Iacinctus is now bliew, nowe reddish, nowe pur∣ple, & now bright bliew. And thereof bée thrée manner of kinds, some be citrine, & some bliewe, but among such manner stones, the bliew is best. The stone is wonderfull, for it consumeth it most to the aire. For in dimme weather it is dim, and in dright weather it is bright. And this stone hath a singular vertue, as Authours write: for it giueth gladnesse, and is contrarye to melancholy quality: and hath vertue of comfort, as Isidore saith in the kind thereof. Iacirctus hath vertue of comfort, & doth away eleignesse Page 262 and sorrowe: and also vaine suspition. And withstandeth diuers pestilences that come ofte of corrupt aire, and giueth strength and vertue to members, and life to the sinewes, and giueth good sauor and swéete and wholsome, and is most lyke to the Saphire. And Dioscorides saith, that all men that treate of preci∣ous stones, meane, that the more lyke the Iacinct is to the Saphire in colour & in substaunce, the more vertuous it is. And such Iacinctus withstandeth venim, and is contrary to poyson, as Dioscori∣des saith. Also an hearbe of ye same name is like therto in colour; and equall ther∣to in manie things, though it be not all alike thereto in valewe, as Isidore sath.
(*Iacinthes grow in the Iland of Zey∣lam, they are tender stones and yeolow, they are best that are of déepest colour: a Iewell of small value in Calicut, where they are polished, ye cléerest are best, Bar∣tholome hath mistaken the color, in that he saith it to be a blew, when it is yeo∣low. Decades of the West In∣dies, fo. 426.)