Diffraction Spectroscope, Pocket Grating Gemological Spectrometer for Quick Gemstone Identification and GIA Use

Great for the price very accurate with full sized view of spectrum. Identify gemstones with a great tool comparable to Gem- A spectroscope. Professional quality at a decent price this not a toy. Is as good as Gem-A. GIA approved one that goes for double. Great precision optics and shows full spectrum no scale. Great for gemological research and any other purpose. Move back to veiw full spectrum!!! Doesn't have grating lines but is still great.

NO directions not even which end to look through and that's important!! little info on line on this piece and have to read about other similar devices. A play toy at best without some basic knowledge. I'll keep trying by reading forams, asking some friends with more knowledge etc. Disappointed but that might change in time, lots of time!!

I'm impressed with the quality and utility of the spectroscope. It's good enough to help me know how interesting spectroscopy is going to be as I learn more.

There was not a moment that any of those things I can they are not good or not well ahead of my expectatione.

As described and arrived well packaged.

Disappointing. I gave it to my sister for a gift. She is very interested in stones and gems. We could not understand ..... Information provided is for people who already know how!

Smaller than I envisioned and very difficult to see the colors and scale if you wear glasses.

As Advertised. Great Product

Muy económico y práctico con su estuche imitación piel

Estoy contento con la compra

Cooles Teil. mMan kann sogar Frauenhoferlinien im Streulicht des Tages erkennen.

It works as it should.

Professional tool good quality.