The Ade Advanced Optics Chelsea Filter is a professional tool for identifying gemstones in India. It helps differentiate natural from synthetic stones like emeralds, aquamarines, and blue spinels by analyzing their fluorescence. This filter transmits specific wavelengths of light (690nm red, 570nm yellow-green) to reveal characteristics crucial for gemological assessments.
Originally devised in 1934, this filter is essential for detecting dyes and treatments in gemstones. Its compact, foldable design makes it convenient for use in laboratories or fieldwork. The filter's high-quality optical performance ensures clear differentiation, making it a reliable addition to any gemologist's toolkit for accurate appraisals.
Imported directly for Indian buyers, this Chelsea filter ensures you receive an authentic tool for precise gem identification. All customs duties and GST are included in the price. Your order is shipped via ExpressBox with tracking, arriving within 21-24 days.