The spectroscope is a fundamental gemological tool. Learn how to use it to identify gemstones based on their absorption of different wavelengths of light.

The spectroscope is an important tool for identifying gemstones. Since gemstone species have characteristic structural and chemical properties, gems selectively absorb specific wavelengths …

There are three requirements for effective gemstone spectroscopy: a good spectroscope; a light source, preferably of variable intensity; a convenient means of transmitting the light through, or …

In these courses a sound knowledge of gemstone spectroscopy is essential, together with the ability to recognise the absorption and fluorescence spectra of many of the gem materials …

While we still use the hand spectroscope, where possible, every gem tested at Lotus Gemology has its spectrum measured by a UV-Vis-NIR spectrophotometer. Once you learn to recognize …

The spectroscope is especially useful for quickly separating visually close gems like spinel and corundum. On the other hand, it generally does not allow to separate natural gems from …

The spectroscope is a tool for examining which parts of white light are absorbed by a gemstone (as well as by other materials). Materials can absorb parts of the electromagnetic spectrum, …

The best-selling GL Gem Spectrometer™ is an innovative and advanced gem testing instrument for gem dealers, mineral collectors, gemmologist appraisers and geoscience applications; it is …

The primary tool used to determine the optical properties of gemstones is the spectroscope. To understand how a spectroscope works, we must first examine the underlying principle of what …

2025年2月7日 · The hand spectroscope, championed by Anderson (1944a,b) and Crowningshield (1957; see also Moses et al., 2003), gives a visual representation of the wavelength regions of …