What Are the Most Common Gem Certifications?

When it comes to buying gemstones and diamonds, many pieces are uncertified. In fact, a significant percentage of jewelry on the market today is sold without formal gem certification. However, for buyers looking for an added layer of assurance and peace of mind, opting for certified stones can be a worthwhile investment.

Gemstone certifications provide an independent assessment of a stone's quality and authenticity, though they come at a premium. While not every buyer will choose to pay extra for this certification, it can be an important consideration for those seeking to guarantee their gem's characteristics and value. Here are the most recognized gem certification organizations, ranked by popularity and trust.

1. Gemological Institute of America (GIA) - The GIA is the gold standard in gem certification and the most widely recognized globally. Their reports offer in-depth analysis, grading diamonds and gemstones for their cut, clarity, color, and carat weight. Opting for a GIA certification means paying a bit more, but it ensures you're getting a thoroughly vetted stone.
2. International Gemological Institute (IGI) - IGI is a popular choice, particularly in Europe and Asia. Known for certifying both natural and lab-grown diamonds, IGI provides detailed reports similar to GIA, but often at a lower price point.
3. American Gem Society (AGS) - AGS is highly regarded for its strict grading system. Its unique 0-10 grading scale provides a clear understanding of the gem's quality, making it a trusted name for those looking for certified diamonds and gemstones.
4. HRD Antwerp - Based in Europe, HRD Antwerp is a reliable name in gem certification, particularly for diamonds. Their reports provide detailed insights and are commonly used in the European market.
5. Swiss Gemmological Institute (SSEF) - Known for its expertise in colored gemstones, SSEF offers highly detailed reports. Its certifications are often sought after for high-value stones like emeralds, rubies, and sapphires.
6. Gübelin Gem Lab - Specializing in high-end colored gemstones, Gübelin Gem Lab is trusted by buyers of rare stones. Their reports provide information on the gem's origin, making it an ideal choice for those purchasing investment-grade gemstones.
7. Asian Institute of Gemological Sciences (AIGS) - AIGS, based in Thailand, is a well-known name in the colored gemstone market, particularly in Asia. They provide detailed certification reports for buyers looking for assurance in the quality of their gemstones.

Certified vs. Uncertified Stones

For many buyers, uncertified stones are a perfectly fine option. These gems can still be beautiful, valuable, and meaningful, but they don't come with the premium price tag associated with certification. Certified stones, on the other hand, provide added confidence for those looking to ensure their gem's authenticity, quality, and value.

Whether you're purchasing a certified diamond or a stunning ruby pendant, or choosing a piece without certification, the decision is entirely up to you. Certification can offer peace of mind, but uncertified gems can still provide incredible value.

At Robinson's Jewelers

At Robinson's Jewelers, we offer both certified and uncertified gems to suit every buyer's needs. Our certified stones come with documentation from the world's leading gemological institutions, while our uncertified pieces are selected for their beauty and craftsmanship. Whether you're looking for a pearl necklace or a halo ring, you'll find something special in our collection. Explore both certified and uncertified pieces today!