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This score evaluates the hue, tone, and saturation of a gemstone`s color, the factor which has the greatest influence on tanzanite’s overall value.

4:Top Pedigree Color
Represents the most highly prized color for tanzanites. This color is the pinnacle of desirability and command a premium price.

3.5: Rarely Seen Color
Slightly shy of top pedigree, this color is rare and highly valued but not quite at the top level. Top 3% of all tanzanite mined

3: Top 10% Color
Found in the top 10% of tanzanites in terms of color quality. This is a very desirable shade.

2.5: Top 30% Color
This color falls within the top 30% of tanzanites, making it a high-quality but slightly less rare option.

2: Top 50% Color
Represents a color that is in the top 50% of tanzanites, still a good quality but more common than higher-rated colors.

1.5: Colors Considered Too Dark or Too Light - These colors are generally outside the optimum range, either too dark or too light, impacting their desirability.

1: Commercial Spectrum Colors
This range includes colors that are common and commercially available, often less prized compared to higher ratings.

The Clarity Rating System assesses the presence of inclusions and flaws within the gemstone. This factor influences both the gemstone`s visual appeal and its value.

4: Flawless or Nearly Flawless
Inclusions are very difficult to see even with magnification. Equivalent to VVS for all gem types.

3.5: Extremely Clean
Minor inclusions visible only under high magnification. Generally VS clarity.

3: No Surface-Touching Inclusions
No inclusions visible to the naked eye, with varying clarity levels based on gem type.

2.5: Nearly Eye Clean
Moderate inclusions visible under a loupe and strong light.

2: More Clean than Included
Inclusions discernible with the naked eye.

1.5: Moderately Included
Numerous inclusions visible to the naked eye.

The Rarity Rating System determines how uncommon the gemstone is in the market

4: Exceptionally Rare
Extremely limited in availability and highly sought after.

3: Very Rarely Seen
In the Market. Seldom available and difficult to find.

2.5: Quite Rare
Within Its Gem Type. Rare but can be found with effort.

1.5: Fairly Regularly Seen
Commonly available and not particularly rare.