When it comes to purchasing diamonds and gemstones, understanding their quality and authenticity is crucial. Grading labs play a significant role in evaluating and certifying the attributes of these precious stones. At Toshakhana, we prioritise transparency and quality assurance in our jewellery selection process. Therefore, we utilise reports from some of the most reputable diamond and gemstone grading labs in the industry. Below, we’ve compiled information about these labs, emphasising our commitment to providing you with the highest standards of excellence.

Gemological Institute of America (GIA)

The Gemological Institute of America, or GIA, is widely recognised as one of the most trusted and influential gemological laboratories globally. Established in 1931, GIA is known for its rigorous standards and unbiased grading practices. Their comprehensive reports provide detailed information on a diamond’s 4Cs (carat, cut, colour, and clarity) and are highly regarded by both consumers and professionals.

Website: GIA Official Website

International Gemological Institute (IGI)

The International Gemological Institute, or IGI, is another well-respected grading lab that offers a range of services, including diamond and gemstone certification. With a global presence, IGI provides detailed reports that cover various aspects of a gemstone’s quality, helping consumers make informed decisions.

Website: IGI Official Website

American Gem Society Laboratories (AGSL)

The American Gem Society Laboratories, or AGSL, is known for its strict grading standards and emphasis on ethical practices. AGSL provides detailed reports, including the performance-based ASET (Angular Spectrum Evaluation Tool), offering insights into a diamond’s light performance.

Website: AGSL Official Website

European Gemological Laboratory (EGL)

The European Gemological Laboratory, or EGL, has multiple locations worldwide and is recognised for its diamond and gemstone grading services. EGL reports provide information on the 4Cs and additional details, contributing to transparency in the gemstone market.

Website: EGL Official Website

Choosing the Right Lab for You

When purchasing diamond and gemstone jewellery, it’s essential to consider the grading lab’s reputation and the thoroughness of their certification process. Each of the mentioned labs adheres to high standards, but preferences may vary based on individual requirements.

Remember, a certified stone from a reputable grading lab adds value and assurance to your purchase, ensuring that you receive a genuine and accurately graded diamond or gemstone.