Please check our “Special Deal” Watch & Jewellery Technology – valid until January 15th. For reading the PDF just click on the picture. We´re looking forward to hearing from you:! Your ERNST & FRIENDS Team


The first Synthetic Diamond Scanner that can screen automatically for mounted jewelry but can also be used to test loose stones with various test result.

On August 18, 2019 we celebrated our move to the new facilities with our staff, families and close friends of ERNST & FRIENDS GMBH.

It would be a pleasure for us to welcome you at the JCK Las Vegas Show from 31st May – 3rd June on our booth 58077, Sands Expo & Convention Center, Level 1.  

At the show we are going to present our TOPjewelry technic“ products and novelties, such as:

  • PRAC-TEC Gold and Carat Scales
  • SMARTPRO Gemmological Testing Tools
  • ELMASONIC EASY, the new Ultrasonic Cleaning Machine Series
  • PRAC-TEC Polishing Machines

Click here for our brand new PRAC-TEC and SWISOTECH Top Seller overview. Wholesale and quantity prices on request!

Product Novelty: PRAC-TEC Pocket Scales Carat & Gram. High quality and best price/performance ratio.

Grinding and Lapping Machine. Using the Lapping Machine surfaces and edges can be reconstructed in a very special way: surfaces, edges, cuts and shapes of watch cases and metal straps can be exactly restored. Advantage against usual polishing motors: By repeated simple polishing of watch cases and bands, the edges and shapes are rounded more and more and the watch case looses its original shape/form. Only a precision lapping machine can reconstruct the original shape, especially edge grinding etc.

The LM-1 lapping machine has a powerful motor with electronic motor control board and speed control. As an extra an adjustable support table (Item No. 3963.1) can be fixed on the guide rail, (included in the basic equipment) or a watch case clamping device (3963.2)