
Gemstone Services
GSI offers a full range of colored stone services designed to provide precise identification, analysis, and reporting for gemstones. Our expert gemologists use advanced technologies and rigorous methodologies to assess the quality, origin, and authenticity of a wide variety of colored stones. Whether you're dealing with rubies, sapphires, emeralds, or other precious gems, our services ensure accuracy and reliability. Trust us for detailed reports and certifications that meet the highest industry standards, supporting your confidence in every gemstone.
Gem Identification

Key Features:
- Expert Gemologists: Decades of industry experience.
- Comprehensive Identification: Includes authenticity, origin, and characteristics.
- Detailed Reporting: Provides species, variety, measurements, weight, quality characteristics, and optional photos.
- Benefits:
- Thorough Analysis: Ensures accurate identification and detailed information about gemstones.
Gemstone Treatment Identification

Identifying gemstone treatments is a challenging task requiring years of experience. Various processes used to enhance the appearance or durability of gemstones require understanding and expertise. Although many treatments are commonly accepted and disclosed, it’s crucial for buyers to be aware of them since they can impact a gemstone's value and authenticity. Knowing about these treatments enables informed purchasing decisions and a deeper appreciation of a gemstone's true characteristics.
Key Features:
- Identification & Treatment: Whether the gemstone is natural or synthetic, and if it has been treated to enhance its appearance
- Description: A detailed description of the gemstone, including its color, shape, weight, and measurements
GSI Reports are issued for individual loose gemstones, gemstone pairs, gemstone sets, as well as for mounted jewelry.
Geographic Origin Determination

Understanding a gemstone's origin goes beyond where and how it was formed in the Earth, but where it is found geographically adds a unique value.
Key Features:
- Integrated Analysis: Uses analysis, microscopy, and a comprehensive database to determine geographic origin, if definitive evidence is present.
- Detailed Description: Includes gemstone characteristics and any detectable treatments.
