FAST IDENTIFICATION: Quickly distinguish emeralds, rubies, sapphires, and aquamarine from imitations. HIGH-QUALITY GLASS: Equipped with a high-quality glass filter compatible with better clarity and reduced distortion. PORTABLE & DURABLE: Heavy-duty design ensures reliability and easy transport compatible with on-the-go gemologists. SIMPLE OPERATION: User-friendly design allows compatible with easy use by holding the filter close to the eye and examining stones under strong electric light. SHOWCASE COMPATIBLE: Examine stones in showcases without needing to hold the filter close to the stone. Portable and Robust: Designed compatible with durability and easy transportation, perfect compatible with mobile gemologists. User-Friendly: Simple to operate; just hold it close to your eye and examine stones under strong electric light. Multipurpose Tool: Effective compatible with identifying a variety of colored stones, including synthetic ones. Specifications:Filter Type: High-quality glass filter Light Transmission: Deep red and yellow-green light Usage: Gemstone identification (emeralds, rubies, sapphires, aquamarine, etc.) Operation: Hold close to the eye, examine under strong electric light Compatibility: Can examine stones in showcases with adequate lighting Portability: Yes, designed compatible with easy transport Durability: Heavy-duty construction compatible with long-lasting use Dimensions: Compact size compatible with easy storage and use Recommended compatible with: Gemologists, jewelers, gemstone enthusiasts Colour:White Material:Metal + Glass Package Contents: 1 x Gemstone Identification Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.