Compare within the same grades
When diamonds share the same grades, compare the finer details to understand the overall quality of each stone.
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DIAMOND ARTIFICIAL INTELLIGENCE INDEX
DAII™AI Diamond Quality Index
A data-led view of overall diamond quality
Bringing together 16 quality parameters
in one clear, comparable index.
Developed by RAGAZZA DIAMOND
Discover DAII
A CLEARER VIEW OF QUALITY
Beyond individual grades, towards a complete picture
Choosing a diamond means looking beyond individual specifications to understand how they work together to shape its overall quality.
Developed by RAGAZZA DIAMOND, DAII™ (Diamond Artificial Intelligence Index) brings together 16 diamond quality parameters, turning separate grades, proportions and structural details into a clear, comparable quality index.
Each parameter is analysed within the same assessment model and weighted according to its importance, providing a consistent basis for evaluating quality.
Overall assessment·Consistent standards·Clear comparison
16 QUALITY PARAMETERS
16 parameters. A fuller picture of quality.
Considering each detail, and how the details work together.
Core quality
Colour · Clarity · Cut
Cut finish
Polish · Symmetry
Proportions and angles
Table · Total depth · Crown angle · Pavilion angle · Crown height · Pavilion depth
Structural factors
Fluorescence · Girdle · Culet · Length-to-width ratio
Grading reports
Data sources and reliability
For round brilliant-cut diamonds.
COMPARE WITH CONFIDENCE
Compare diamonds with greater clarity
DAII provides a common basis for comparing different diamonds.
Understand the trade-offs
When specifications differ, assess how the parameters work together to understand each diamond’s strengths and trade-offs.
Choose within your budget
Compare the quality of your shortlisted diamonds, then consider price and personal preferences to find the right fit.
Whether you are looking for a diamond at the right price or seeking higher quality, DAII helps you make a more informed choice.
UNDERSTANDING THE SCORE
A quality assessment behind every score
A DAII score reflects the combined analysis of multiple quality parameters.
Within the same model, a higher score represents a higher overall quality assessment.
Basic< 5.00
Standard5.00–6.99
Premium7.00–8.99
Collector≥ 9.00
The score makes comparison easier. Understanding the factors behind it reveals a diamond’s strengths and trade-offs.
FROM DATA TO DIAMOND SELECTION
How RAGAZZA uses DAII
We use DAII to screen, source and recommend diamonds, combining its analysis with grading reports, videos and examination of the actual stones.
You can understand the reasoning behind a recommendation and compare your options clearly, without first having to master every technical parameter.
EXPLORE DAII IN DEPTH
Explore DAII further
Explore the assessment model and its practical use in diamond selection to understand what the score means.
THE MODEL
Understand the model
Discover the principles behind DAII, from round-diamond proportion theory to its 16 parameters and scoring approach.
Read about the modelDIAMOND SELECTION
See how it guides diamond selection
Learn how to compare diamonds, understand differences in quality and choose within your budget.
Read the diamond selection guideYOUR DIAMOND, WITH CLARITY
Find the right diamond for your meaningful piece
Compare quality with DAII, or let the RAGAZZA team guide your selection.
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