Však, ne všechny podlouhlé tvary zobrazují motýlky. Motýlkový efekt je problém způsobený člověkem a dochází k němu při řezání diamantů. Někdy je motýlek nevyhnutelný, protože diamantový brusič se musel vyhnout dalšímu většímu problému v kameni a někdy je to prostě výsledek chyby.
It’s easy to think that cutters should simply not cut bowties in their diamonds but diamond cutting is complicated work and even the best diamond cutters aren’t perfect. Stručně řečeno, here are the several main things that can result in a diamond bowtie:
A mistake – the cutter may have cut the diamond poorly with misaligned facets.
The cutter may feel forced to cut the diamond in such a way that it would result in a bowtie because the alternative is to cut too much rough off the diamond and reduce its carat weight excessively. Konec konců, while every cutter wants to craft the most beautiful diamonds possible, this is a for-profit industry and the bigger the stone is, čím lépe.
The cutter may have had to cut the diamond this way in order to avoid bigger inclusions. Diamond bowties are unsightly, especially when they are very pronounced but they are not the worst thing that can happen to a diamond