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Irr (1-5c)

1q

2q

3/4q

Irr Ė Irregulars

Stepped crystals (relief from small to sharp marked), corner absence, face split.

1q: 1st quality. Loupe clean stones, stones with minor near surface defect

2q: 2nd quality. Minor defect in a central part or several small defects in a peripherical zone, minor near surface crack that parallel to face.

3/4q: 3rd-4th quality. Small near face crack or in an intermediate zone. Small defect in a central part (each stone should be studied separately as rough for cutting). Interpenetrant ingrowth (embedded crystal) allowed. If interpenetration isnít deep, additional defect (crack) allowed.

 

Rough Library

12 : 1q : 1col : 0.99 ct

13 : 1q : 2col : 0.96 ct

14 : 2q : 3col : 1.05 ct

15 : 2q : 5col : 1.15 ct

16 : 3/4q : 3col

1q

 


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