SI1 Diamond complete guide


SI1 Diamonds Basics

If you are looking for a diamond, an SI1 diamond is a wise choice. By understanding the advantages of SI1 clarity diamonds and some diamond selection guidelines, you will be able to find the perfect diamond at a reasonable price. Besides information, you can find below sample magnified pictures of diamonds that visually demonstrate SI1 diamonds. My aim is to show you all you need to know in order to buy the best SI1 diamond.  

Diamond clarity definition

Clarity measures the presence or absence of flaws or inclusions (internal flaws) in a diamond. The fewer flaws a diamond has, the higher its grade. The most common method of classifying gemological clarity is the Gemological Institute of America (GIA) system, which consists of 11 different grades. Here are the GIA’s Diamond Clarity ratings displayed visually: Diamond clarity chart FL-IF: No internal flaws, but IF will show very small surface flaws. VVS1-VVS2: Tiny inclusions are very difficult to detect under 10x magnification by a trained gemmologist. VVS1 is slightly cleaner than VVS2. VS1-VS2: Minor inclusions visible under 10x magnification. SI1-SI2: Inclusions are visible under 10x magnification but usually not visible with the naked eye. I1-I3: Inclusions visible to the naked eye  

Actual Diamond Photos from JamesAllen

Why an SI1 clarity diamond?

The GIA describes SI1 clarity as the existence of small internal flaws or inclusions that are only visible using a 10X magnifying loupe or other similar magnification. Prior to buying an SI1 clarity diamond, you must view it through a magnifying tool, since only with magnification can you view the flaws and inclusions. SI1 clarity diamonds are a smart choice when buying a diamond. Although SI1 diamonds have inclusions, the inclusions are invisible to the naked eye.  

Where to shop for an SI1 clarity diamonds

You have many options in shopping for diamonds today. You can purchase a diamond from a local jewelry store, a large well-known jewelry store, a department store, or even a pawn shop. You can also shop for a diamond online, using a reputable website that specializes in high-quality diamonds.  

Shopping SI1 clarity diamond online

Shopping for SI1 clarity diamond online allows you to choose from a huge selection of diamonds, whereas shopping for diamonds in physical stores limits your purchase options to what is on hand. Interestingly, many diamond websites allow you to see a magnified picture of the actual diamond you purchase. Some websites provide a detailed picture of each diamond, as well as each diamond’s own gemological grade. Online shopping makes finding the perfect diamond for you an achievable goal.  

Diamonds certifications

The GIA is one of the two most accurate and professional gemological labs, the other being the American Gem Society. There are other gemological labs; some have higher requirements for a diamond to receive higher clarity grades, while others are not as strict on the requirements. The other labs’ grading is not inaccurate or bad, but their systems tend to give diamonds a higher clarity grading than either the GIA or AGS, so typically I recommend these two most respect labs systems To be on the safe side, choose diamonds with GIA clarity certifications.

Finding the best SI1 clarity diamond

Although two diamonds may have the same GIA clarity grading, that doesn’t mean they are exactly alike. There are significant differences between attractive SI1 clarity diamonds and SI1 clarity diamonds that have inclusions or flaws. Diamond inclusions differ in three ways: 1. The location of the inclusions in the diamond 2. The size of the inclusions 3. The color of the inclusions The secret to finding the best SI1 clarity diamond is to look for a stone with very small inclusions that match the diamond’s color and that are located away from the diamond’s center.

Actual Diamond Photos from JamesAllen


Sample pictures of SI1 clarity diamonds

The following pictures are of SI1 clarity diamonds, as graded by the GIA. As you can see, there are major differences among them. One thing to remember about SI1 clarity diamonds is, when looking at them without the use of any magnifying tool, flaws will not be visible. However, when you observe them through a microscope or a loupe you should be able to detect any flaws (the pictures below are X40 pictures).  

SI1 diamond


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author Dan Greenberg (39 Posts)

Dan Greenberg, founder of Diamonds Geek, is a skilled diamond expert. He started his way in the diamond business as a travelling salesman for a few large diamond houses, among them are Dalumi and Novel Collection.

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