® GEMOLOGICAL INSTRUMENTS Darkfield illumination Iris diaphragm for illumination control Overhead spot illumination Stoneholder Presentation Series Designed for 110v and 220v use • GIA Designed • Model 910000- 10x ITEM # 36-1021 MAGNIFICATION RANGE 10X DESCRIPTION Overhead Light Source LED Incident Light Source Model 930100 36-1018 Model 930200 36-1019 • GIA Designed • Simulates north facing light for accurate color grading Essential for opaque and darker translucent stones Detect synthetics and enhancements easier • GIA Designed • View facets and surface graining better with reflected light Variable light operates independent from darkfield and brightfield lamp Direct horizontal or oblique angle light Observe thin-film effects such as iridescence in liquid inclusions and in tiny cleavages ITEM # 36-1018 DESCRIPTION OVERHEAD LIGHT SOURCE ITEM # 36-1019 LED INCIDENT LIGHT SOURCE DESCRIPTION © Copyright 2008 173 previous page next page