Goldsmith Co. is the only jeweler in Utah County that sells ONLY independently certified diamonds from most trusted labs (GIA, AGS…). So what? Well, it means you can’t ever buy a mis-graded diamond from us. The least expensive diamond in our store may well have a better pedigree than the most expensive diamond in another store.
Why does it matter? While there are many diamond grading laboratories in the world, GIA and AGS are the standard laboratories for the finest diamonds because of their absolute accuracy. Diamonds graded by other laboratories can often be inflated as much as a full grade on clarity, color, and cut compared to the same stone certified by GIA or AGS.
Avoid overpaying, diamonds often contain minute inclusions or imperfections that are invisible to the naked eye. These can have a huge impact on the price of the stone. If not for the proper scrutiny, you can easily be fooled into paying the price of a higher quality stone for an inferior stone. Small, local labs are often connected in some way with a store, so they tend to grade diamonds more favorably in order to help make the sale. The GIA, AGS labs are very conservative in their grading because they do not sell diamonds and do not receive any portion of diamond sales. A certificate from one of these labs is the best way to get the diamond you want and avoid paying an F color price for a G color quality.
What’s in the Reports?
A Diamond Certificate is essentially a statement confirming the characteristics and authenticity of a specific diamond, and will usually contain the following information:
Reference Number This allows laboratories to access your diamond information in case there are any queries about it.
Shape & Style/Cut This reports the shape and style characteristics of your diamond, such as Round Brilliant.
Measurements The reports the physical measurements of your diamond. For round brilliant diamonds it is shown as: (minimum diameter) ‐ (maximum diameter) x (depth) For all other shapes it is shown as: (length ‐ top to bottom) x (width ‐left to right) x (depth)
Proportions This is used to highlight your diamond’s values in terms of girdle, culet, durability, weight ratio and tilt.
Finish This is used to describe the polish and symmetry of your diamond, and relates to how smooth the diamond’s facets are. Finish information also considers the placement of the diamond’s facets and their uniformity.
Color This reports the laboratory’s opinion of the color of your diamond. This may be displayed as a letter (D‐Z, with D being a colorless diamond), or as a number (0‐10 with 0 being a colorless diamond).
Clarity This reports any blemishes and inclusions that your diamond has. This information may be displayed as: Flawless/Internally Flawless (FL/IF) to Included (I) This can also be displayed as numbers (0-10) with 0 representing a Flawless/Internally Flawless Diamond.
Cut This is perhaps the most valuable offering of a GIA or AGS certified stone. It offers a grading system for the cut of the stone ‐ which is the most important of the 4C’s of quality. GIA grades stones on a scale of:
- Very Good
AGS grades stones on a numerical scale starting with 0 as the best.
Here is what the certificates from these laboratories look like.