1. How does your system handle asymmetrical cuts ?

DTI technology uses a perfectly symmetrical and perfectly polished virtual model in its
analysis. Everyone knows that most cut diamonds have some level of asymmetry as a part of
their make. For this reason, most all diamond grading labs have separate symmetry rating. This
rating is usually obtained using Sarin type machines. Although these machines are accurate and
accepted world wide, no machine or technology can measure every asymmetry every time.
Therefore we chose to take the average proportions of a diamond and make them perfectly
symmetrical and perfectly polished to have a standard model. Diamonds with noticeable
asymmetry will have this fact separately noted on their certificate from the lab.

2. How do color and clarity effect your Cut Beauty Index™?

The facet pattern and proportions should not be executed any differently because the
diamond is off colored or included. Therefore the DTI virtual model is colorless and contains
no inclusions and the Cut Beauty Index™ is not effected any differently.

3. Should the cut of a fancy colored diamond be graded the same as a standard white diamond?

No...When cutting colored diamonds the goal is different than with standard white diamonds.
Enhancing color takes precedent over brilliance, fire, and scintillation. To enhance color,
cuts that keep the light in the diamond longer are created, this process does not always
produce the highest brilliance, fire, and scintillation in white diamonds. Therefore the grading
process is different.

4. What is a Cut Beauty Index™?

The DTI Cut Beauty Index™ is a numerical representation that rates the true look or beauty of a
diamond as seen by the human eye. The Cut Beauty Index™ is a numerical rating of how the
composition of brilliance, fire, and scintillation work simultaneously to create the look of a diamond.

5. Does DTI offer a machine or software for sale ?

No...at this time we only offer services which utilize the technology rather than the technology itself.

6. Of the four Cs’ of diamonds, which one is the most important in affecting the look of the diamond ?

Cut. Scientific research has shown that cut by far effects beauty the most. Furthermore, it is the
one characteristic that the cutter has any control over.

7. Is your technology patented?

Yes. DTI was the first to receive a patent for a computer cut grading system for gemstones:
U.S. Patent # 5,966,673

8. Why is DTI technology the best at measuring cut beauty?

The true beauty of a diamond is:

• more than just light return
• more than preconceived ideas of what cut proportions are considered “Ideal”
• more than symmetry
• more than an the individual analysis of brilliance and fire

The true beauty of a diamond is a collection of all these factors and much more, analyzed simultaneously the way it happens in reality, the way it happens with DTI technology.