According to Wikipedia:
"Slightly Included category (SI) diamonds have noticeable inclusions that are easy to very easy for a trained grader to see when viewed under 10x magnification.[2] The SI category is divided into two grades; SI1 denotes a higher clarity grade than SI2. These may or may not be noticeable to the naked eye."
"Good" is relative. From an investment point of view, SI is not as good as the less included clarity ratings.
SI stands for "slightly included" and is a classification used to describe the clarity of a diamond. Diamonds with SI clarity have inclusions that are noticeable under 10x magnification but may be difficult to see with the naked eye. This clarity grade represents a good balance between quality and value for many buyers.
An SI quality diamond refers to a diamond that has inclusions that are slightly visible to the naked eye under close examination. SI stands for "slightly included" and is a clarity grade in the Gemological Institute of America's grading system. These diamonds offer a balance between quality and value.
The term "SI" indicates a clarity category, not a colour category. For clarity, "SI" indicates slightly included, and is usually followed by a number, 1, 2, or 3. In this scale, fewer is better.
H1 is not a common notation for describing a diamond. H is one description for a colour. Numbers usually follow V, VV, or VVS; S, SI and so forth, indicating the number of visible flaws in a stone. H1, then, may be a typo in a description.
IMP1 Clarity refers to a diamond clarity grading scale used by some diamond sellers. It is typically considered to be an inclusion-heavy grade, indicating visible inclusions within the diamond that can affect its appearance and value. Diamonds with IMP1 Clarity may have noticeable flaws and imperfections when examined under magnification.
SI stands for "slightly included" and is a classification used to describe the clarity of a diamond. Diamonds with SI clarity have inclusions that are noticeable under 10x magnification but may be difficult to see with the naked eye. This clarity grade represents a good balance between quality and value for many buyers.
An SI quality diamond refers to a diamond that has inclusions that are slightly visible to the naked eye under close examination. SI stands for "slightly included" and is a clarity grade in the Gemological Institute of America's grading system. These diamonds offer a balance between quality and value.
SI-1 clarity in a diamond indicates that the stone has "Slightly Included" characteristics, meaning it contains inclusions that are visible under 10x magnification but are typically not noticeable to the naked eye. These inclusions may affect the diamond's overall appearance and value, but they are generally minor. SI-1 diamonds can still present a good balance of quality and affordability, making them a popular choice for many buyers.
If we select the popular cut which is round, then a 1 carat round cut diamond of H color and SI1 clarity will cost approximately $4129. You can visit www.dubaiwholesalediamonds.com/diamond-searchfor more options.
SI1 has the fewest and smallest inclusions, while SI2 has more and larger inclusions. This doesn't mean that SI clarity diamonds are a poor choice. In fact, most SI1 clarity diamonds will look just as good as a higher clarity diamond.
Every diamond is worth what someone will pay you for it. You can purchase a diamond of this weight and clarity today from Blue Nile and pay between US$1,283 and US$1,617, depending on the cut, exact weight and refined clarity.
The term "SI" indicates a clarity category, not a colour category. For clarity, "SI" indicates slightly included, and is usually followed by a number, 1, 2, or 3. In this scale, fewer is better.
Any diamond is 'good' when it can be certified as to its characteristics: cut, colour, carat weight and clarity. A certified gemologist can perform this work for you.
The U colour is in the clearly yellow range of 'colourless' diamonds, and SI 2 is toward the lower end of desirability in terms of clarity. Today, at Blue Nile, the 'yellowest' diamond you can buy in the .65 carat price range is J colour, and with the clarity option you want, you'll spend about US$1,000.00.
"The clarity of the diamond tells you how clear the diamond is"
For diamond Cut- round/ brilliant color= D, E, F clarity= Fl, IF or VVS1
A GIA round 3 carat F color, VVS2 clarity diamond can cost about $56,900 and 3 carat round H color, SI2 (100% eye clean) clarity diamond costs about $25,951. You can select a good quality diamond if you focus on the cut and compromise on the clarity, depending on your budget.