we grade our sapphire in the classic sapphires grading.
Best – Eye Clean (all our peach sapphire)
Second – Slightly Included – SI
We do not sell sapphires less than SI
Clarity Grading for Colored Gems
In the world of diamonds, clarity is one of the four “C’s” that determine value, along with color, cut, and carat weight. Diamonds are strictly graded for clarity on a scale devised by the Gemological Institute of America (GIA), from IF (internally flawless) to VVS1/VVS2 (very, very slightly included) to VS1/VS2 (very slightly included), and so on. Even very tiny inclusions can significantly lower the value of a diamond.
Clarity is also important in colored gems, but the standards are quite different. Applying Diamond standards to colored stones would be a mistake, and would result in a buyer missing out on many fine stones. In colored gems, it is a color that is paramount, and inclusions are tolerated if they don’t detract from the beauty of the stone. Indeed for gemologists, the presence of distinctive inclusions in a colored gem is essential to certify the stone as natural.
We will not buy a Sapphire if we can’t see any inclusions under magnification, It is probably synthetic
There is no international standard for grading clarity in colored gems similar to GIA’s International Diamond Grading System. That is why when you receive a colored gem report from major labs such as GIA and GRS, they don’t include a clarity grade on the report.
However, GIA has introduced a clarity type system for colored gems that helps consumers to understand that there are different clarity standards for different gem varieties. The GIA system classifies gem varieties according to 3 types:
We use for our sapphires the terms “Eye Clean” and SI (slightly included)
Eye clean = no visible inclusions when you look at it with your naked eye that can change the performance of the gemstone.
SI = some visible inclusions (NO CRACKS) with no major influence on the performance of the gemstone.
Usually, eye clean
Almost always included
Chrysoberyl, yellow and green
Corundum, all (Sapphires, Rubies)
Quartz, amethyst, citrine, ametrine
Tourmaline, all but green, red/pink and watermelon
Zircon, all but blue
Tourmaline: red/pink and watermelon
The GIA system.
| || |
|VVS ||Minute inclusions, difficult to see under 10X. Eye clean. ||Minor inclusions, somewhat easy to see with 10X. eye-clean. ||Noticeable inclusions under 10X. Usually, eye clean. |
|VS ||Minor inclusions, somewhat easy to see with 10X. Usually, eye clean. ||Noticeable inclusions under 10X. May be eye visible. ||Obvious inclusions with 10X. May be eye visible. |
|SI1 ||Easily noticeable with 10X. Slightly visible to the unaided eye. Usually low relief. ||Obvious inclusions, large or numerous under 10X. Apparent to unaided eye. ||Prominent to the unaided eye. |
|SI2 ||We don’t trade under SI1 ||Under our min lowest quality || |
|I1 || || || |
|I2 || || || |
|I3 || || || |
These functional grading terms tell you what you can expect to see when viewing the gemstone. They don’t, however, tell you whether the particular stone is a high-grade specimen. For that, you need to consider other attributes of the gem, especially its color and cut. And you should always consider whether the particular gem is a high-grade specimen of that particular type. The GIA clarity types help you understand whether some inclusions should be expected, even in high-grade stones.
Most of the sapphires are treated it is a practice that is done for more than a 1000 years in Sri Lanka Heat treatment of Sapphires is acceptable procedure and any gemological lab will certified a regular heating. There are other procedures like glass filling and heating with beryllium that are NO! This king of treatment takes a very low no value stones full of cracks (blue sapphires and ruby) and fill it buy adding glass in a very high temperature and sell it as original sapphire (or ruby) Beryllium treatment is adding a beryllium to a low quality color sapphire and change the color from cheap color to very expensive color. A glass filed 5 carat ruby value is no more than $20 (between the traders) almost the same for a Beryllium treated sapphire, the problem is that many sellers sell it as regular gems for thousands of dollars. No respected trader will buy or sell such gemstones My advice- check who is the seller and don’t buy a sapphire without a gemological lab report.