H-K9L Spectroscope

45 degree laser Spectroscope lens 30*3mm 1064nmHR T=50% H-K9L circular plano Raytools glass

Introduction:

The spectroscope has developed slowly in its importance in gem testing,

for there are few gem varieties that have diagnostic spectra. In recent years

it has been used more frequently, because new uses for which it is valuable

have been developed. Among the important gemstones ruby, red garnet, some

blue and yellow sapphires, jadeite, zircon, alexandrite and emerald have characteristic

spectra, but the spectra of synthetic ruby and emerald are indistinguishable from those

of their natural counterparts. Its limited application led to concentrate efforts on

the development of such tools as dark-field illumination combined with binocular

magnification, the polariscope, and the spot method for R.I. determinations.