Stainless steel gemstone measuring tool for pocket use. This compact device features round holes to guide precise diameters for stones and diamonds, helping you size gems to exact requirements. Benefits - Precise sizing: circular holes provide accurate measurements and consistent results. - Durable, high quality: stainless steel construction for long lasting use. - Portable and comfortable: pocket sized, easy to carry and operate on the go. - Versatile: suitable for measuring stones, diamonds, and decorative gemstones; useful for gemologists and hobbyists. Specifications and function - Material: stainless steel - Design: round holes for standard gemstone sizing - Application: measuring gemstones to ensure correct size for settings, displays, and crafts Use scenarios 1) Jewelry making and stone setting: verify gemstone size before setting to ensure a secure, accurate fit. 2) Festival and event decoration: quickly size decorative stones for costumes, centerpieces, and adornments. 3) Household crafts and repairs: check sizes for beading, repairs, inventory, or resale quality checks