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Home > Gem Qualities and Information |
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| Genuine Ruby |
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- AGTA:
- RI: 1.762-1.77
- Hardness: 9
- Specific Gravity: 4
- Species: Corundum
- Optic Character: DR
- Phenomena: Chatoyancy(Very Rare)
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| Rubies |
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| Quality Information |
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| C2: Commercial quality; include; variation in color |
B: Included; light pinkish red; good cut; good polish |
A: Slightly included; medium pinkish red; good cut, good polish |
A+: Eye clean; medium to medium dark pinkish red; good cut, good polish |
The below ruby qualities are offered here at USAJewels: |
AA: Eye clean, medium dark pinkish red; brilliance; good cut, good polish |
AAA: Eye clean, medium dark pinkish red to red; briliance; excellent cut, good polish |
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| Genuine Emerald |
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- AGTA: (Generally Enhanced)
- RI: 1.577-1.583
- Hardness: 7.5-8
- Specific Gravity: 2.72
- Species: Beryl
- Optic Character: DR
- Phenomena: Chatoyancy, Asterism (Rare)
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| Quality Information |
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| C2: Commercial quality; include; variation in color |
B: Included (cloudy); light color; good cut, good polish |
A: Slightly included; medium color |
The below emerald qualities are offered here at USAJewels: |
AA: Sightly included; medium dark color; good cut, good polish |
AAA: Very Slightly included; medium dark to dark color; high brilliance; good cut, good polish |
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| Genuine Ruby |
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- AGTA: H
- RI: 1.762-1.77
- Hardness: 9
- Specific Gravity: 4
- Species: Corundum
- Optic Character: DR
- Phenomena: Asterism, color change, chatoyancy(Very Rare)
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| Quality Information |
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| C2: Commercial quality; include; variation in color |
A: Slightly included; medium to dark navy; brilliance; good cut, good polish; little or no color zoning |
A+: Very slightly included; medium navy; brillian; good cut, good polish; little or no color zoning |
The below sapphire qualities are offered here at USAJewels: |
AA: Eye clean; medium navy to royal blue; birlliance; good cut, good polish |
AAA:Eye clean; medium navy to royal blue; brilliance; excellent cut and polish |
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| Genuine Tanzanite |
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- AGTA: H
- RI: 1.691-1.700
- Hardness: 6-7
- Specific Gravity: 3.35
- Species: Zoisite
- Optic Character: DR
- Phenomena: Chatoyancy(Rare)
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| Quality Information |
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| B:Very slightly included; medium light bluish purple; brilliance; good cut, good polish; little or no color zoning |
A: Eye clean; medium light bluish purple; brilliance; good cut, good polish; little or no color zoning |
A+: Eye clean; medium bluish purple; brilliance; good cut, good polish; little or no color zoning |
The below tanzanite qualities are offered here at USAJewels: |
AA: Eye clean; medium bluish purple; brilliance; good cut, good polish; little or no color zoning |
AAA:Clean; medium dark bluish purple; brilliance; good cut and polish; no color zoning |
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