Integrity in Every Grade. Confidence in Every Stone.
At Gemological Integrity of Texas (GIT), our grading standards are built on a single principle—complete transparency and consistency in gemstone evaluation.
Each diamond and gemstone is assessed under controlled laboratory conditions using standardized methods, ensuring that every report reflects its true quality—clearly, accurately, and without ambiguity.
Built for trust. Designed for real-world decisions.
Why Choose GIT?
Our approach ensures every grade is reliable, comparable, and trustworthy.
GIT is designed to provide grading that is not only technically accurate, but also practical and dependable in real transactions.
- Transparent grading that is easy to understand
- Consistent evaluation across all stones
- Clear reporting without unnecessary complexity
- Structured for real-world retail and trade use
Standardized Grading Process
Every gemstone is evaluated using controlled conditions and verified procedures to maintain consistency across all reports.
Lighting — Controlled Daylight Environment
- Calibrated daylight lighting used
- Eliminates color distortion
Magnification — 10x Standard Inspection
- Standard 10x magnification applied
- Ensures consistent inclusion visibility
Measurement — Precision Digital Tools
- Calibrated instruments capture measurements
- Maintains accuracy across reports
Verification — Multi-Step Review
- Multiple checks reduce errors
- Expert validation before certification
THE 4Cs — GIT GRADING SYSTEM
Color Classification
Color grading evaluates diamonds under controlled lighting to detect subtle tint variations.
Stones are compared against master stones to determine accurate color classification.
D–F — Colorless
Exceptional purity with no visible color under controlled lighting
G–J — Near Colorless
Minimal tint detectable, offering strong value and visual appeal
K–M — Faint Color
Slight yellow tint visible under certain lighting conditions
N–Z — Noticeable Color
Clear yellow or brown tint visible to the naked eye
Clarity Evaluation
Clarity assesses internal inclusions and external blemishes using industry-standard 10x magnification.
The visibility, size, and position of imperfections determine the overall clarity grade.
FL–IF — Internally Flawless
No inclusions visible under magnification, extremely rare clarity grade
VVS–VS — Very Slightly Included
Minute inclusions difficult to detect even under 10x magnification
SI — Slightly Included
Inclusions visible under magnification, sometimes noticeable without magnification
I — Included
Obvious inclusions visible to the naked eye affecting transparency
Cut Quality
Cut quality determines how effectively a diamond reflects and disperses light.
Precise proportions and symmetry directly influence brilliance, fire, and overall visual appeal.
Excellent
Maximum light performance delivering superior brilliance, fire, and sparkle
Very Good
High light reflection with strong brilliance and attractive visual appearance
Good
Adequate light performance with moderate brilliance and reduced sparkle
Poor
Limited light reflection resulting in dull appearance and weak brilliance
Note: Cut has the greatest visual impact on overall diamond appearance.
Carat Weight
Carat measures the weight of a diamond using highly precise calibrated instruments.
Larger carat weights generally increase visual size but do not guarantee quality.
0.50 ct (~5.0 mm)
Smaller diamond size offering subtle appearance and lightweight feel
1.00 ct (~6.5 mm)
Standard diamond size balancing presence, value, and overall visual appeal
2.00 ct (~8.2 mm)
Larger size creating noticeable presence with stronger visual impact
3.00 ct (~9.3 mm)
Significant size delivering bold appearance and high visual prominence
Natural and Lab-Grown Diamonds
Natural diamonds form deep within the Earth under high pressure and temperature conditions over millions of years. Lab-grown diamonds are created using advanced technological processes that replicate these conditions in controlled environments.
While both types share similar chemical compositions, specialized testing methods can distinguish between them.
Gemological Integrity of Texas | Diamond Grading Laboratory
Independent diamond grading laboratory providing professional diamond evaluation and certification reports.
