Loupe Estimation / triplet LUES10

This precision loupe from A.KRÜSS features a lens system consisting of three individual lenses and is used to estimate the weight of diamonds and gemstones. An enclosed information sheet enables quick conversion between size and weight. The lenses are achromatic (color-corrected) and aplanatic (distortion-free), which eliminates visible color errors. The special design eliminates visible chromatic aberrations, and the high-contrast magnification provides razor-sharp images all the way to the edges.

Expert knowledge: Learn more about KRÜSS loupes and methods for diamond determination?

• Practical examples of the various applications of diamond testing devices can be found, for example, in the article: Determining diamonds and imitations.
• Background knowledge on the investigation of diamonds and other gemstones can be found in the methods article: Testing and distinguishing gemstones.
• Practical examples of the application of the UV analysis lamp for the investigation of gemstones and precious stones can be found, for example, in the article: Detecting diamond forgeries under UV light.
• More information on the examination method using UV light and phosphorescence as well as fluorescence can be found in the luminescence method article.
• Information on the construction of lenses or lens systems of high-quality loupes can be found in the application article: Loupes application.