World Gemological Laboratory (WGL) is an independent gemological laboratory, founded on August 19, 2022, by Maulana Yusuf, an experienced gemstone trader with extensive expertise in the gem industry. Recognizing the market’s need for accurate, modern, and trusted certification services, he established WGL as a laboratory that upholds integrity, scientific precision, and professional service standards.
By combining field experience with deep knowledge of gemstone characteristics, WGL provides certification solutions that meet both national and international standards.
WGL’s mission is to deliver gemological services that are accurate, transparent, and reliable, helping gemstone owners and businesses enhance the credibility of their collections and products. Every analysis is conducted with a commitment to clarity, precision, and objectivity.
To ensure the highest quality service, WGL applies strict standards in every process:
Our certification reports are printed on premium materials with multi-layer security features, designed to be exclusive, clear, and easy to understand.
WGL uses internationally recognized testing equipment and methodologies to ensure every analysis is conducted scientifically, objectively, and accurately.
Our systems and databases are constantly updated to support accurate gemstone identification in line with global industry developments.
We provide a safe and comfortable lounge, along with friendly and professional service, to ensure an optimal customer experience.
The WGL team consists of certified professionals, including:
With strong academic backgrounds and practical experience in gemstone analysis, our experts ensure every stone is tested with precision, objectivity, and international gemology standards. We believe that the combination of scientific competence and field experience results in high-quality gemological services.
WGL is committed to becoming one of the most trusted, respected, and recognized gemological laboratories in Indonesia. We aim to ensure that every gemstone certified by WGL carries value, clarity, and trust for owners, buyers, and industry professionals alike.