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Eye-clean
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
In clarity grading eye-clean diamonds should have no inclusions that are visible through the crown to the unaided eye.
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Inclusions, английский
- Undesired materials in a solid matrix.
- Prokaryotic cell cytoplasmic structures for storing specific nutrients and other resources needed by cells
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Fancy colour, английский
Any naturally coloured diamond with a noticeable depth of bodycolour considered to be rare or attractive. red and green are the rarest fancy colours, followed by purple, violet, orange, blue and pink. yellow, sometimes called canary diamonds and greenish yellow diamonds are more common. light, or low-saturation coloured diamonds other than yellow or brown, may be classed as fancies, but, in the gia colour-grading system, yellows and browns must be darker than the z master diamond to merit a fancy grade. fancy colour grades are decribed as faint, very light, light, fancy light, fancy, fancy intense and fancy dark in the gia system. treated diamonds are not considered fancy diamonds, but are sometime referred to as `treated fancy diamonds` in the trade.
Egl, английский
European gemological laboratory - egl has franchises in a number of cities around the world which grade diamonds.
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