This is a great way of losing customers with this style of diamond setting! Let me explain why this setting is not acceptable.
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#1. The corners of the row of diamonds were not created with square corners, only 'rounded' sections.
#2. The beads were not of equal size throughout the gem setting areas.
#4. The metal in between the beads looks rough and should have been cut deeper.
#5. The diamonds are not of equal size in the corners.
#6. There are lines of unnecessary metal beside all of the diamonds.
#7. The beads were not burnished anywhere to be seen.
#8. Why was there a small stone set beside a large stone?
#9. At the start of the curve of cutting, there was insufficient skill involved in the metal cutting.
#10. The stones were set first, thus leaving the lines of metal throughout the photo. The "pre-cutting" process would have resulted in a cleaner finish.
#11. There was no care in carving the metal around the diamonds.
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I would have given the stone setter a "Fail" if I were the instructor. Hoping that you concur with my observations.