IGS stands for International Gemological Society, which is an organization that provides gemstone identification, grading, and appraisal services. 

IGS is not a marking that is typically found on jewelry, but rather a reference to a third-party organization that has provided some form of certification or appraisal for the jewelry.

What Does IGS Mean On A Necklace?

If the marking “IGS” appears on a necklace, it is unlikely to be a reference to the International Gemological Society, as this organization does not typically mark jewelry. It is possible that the marking refers to the brand or manufacturer of the necklace.

What Does IGS Mean In Gold?

IGS is not a common marking used in relation to gold jewelry. It is possible that the marking refers to a specific brand or manufacturer, or it could be a personal engraving or customization.

If you have a piece of gold jewelry with the marking “IGS” and are unsure of its meaning, it’s best to consult with a reputable jeweler or appraiser who can provide more information about the piece. 

What Is It Worth?

Determining the value of a piece of jewelry can be a complex process that involves many factors, including the type of metal and gemstones used, the quality of the craftsmanship, the condition of the piece, and the current market demand. 

Without a detailed appraisal of the piece, it is impossible for anyone to provide an accurate estimate of its value.

Is It Of Good Quality?

The quality of jewelry can depend on many factors, including the materials used, the craftsmanship, and the design. Factors such as the type of metal, the purity of the metal, and the quality of the gemstones can all affect the overall quality of a piece of jewelry.

Reputable jeweler or appraiser can provide you with an assessment of the piece’s quality, as well as any recommended repairs or maintenance needed to keep the piece in good condition.


IGS stands for International Gemological Society, it is unlikely to appear as a marking on jewelry. Instead, “IGS” may refer to a brand, manufacturer, or personal engraving on the jewelry piece. 

It’s important to consult with a reputable jeweler or appraiser to get a better understanding of the specific meaning of the “IGS” marking on your jewelry.