The Filter Kit contains all the additional Filters including Filter 2, 3 and the LW Filter 4.
This is the Add-on to GemPen® Diamond Screener which effectively upgrades it to GemPen® Premium.
These filters in combination with the standard Filter 1 (included with Diamond Screener) makes it the most versatile option and offers the user the means to truly study Diamonds and Gemstones by searching for discrepancies in the fluorescence and phosphorescence for further analysis. Filters 2, 3 and 4 are used in combination with Filter 1 to screen for synthetics and flame-fusion (Verneuil), as well as heat, beryllium, and other treatments of Corundum.
Available on backorder