Unfortunately this is becoming more common. The best way to protect yourself against diamonds falling out is to ask before you purchase, specifically about what guarantee they offer in case a diamond falls out. Ask about what happens if the diamond falls out in the first year and subsequence years and get it in writing.
If they are unable to offer a guarantee in writing or other details then they may have concerns around:
- Inferior quality metal casting (pouring into a mould) so the metal is defective.
- Using a money saving technique where the diamonds are cast into the ring and then they try to tighten them.
- Cost cutting so that there is inadequate metal to hold the diamonds.
- Poor design as the designer doesn’t understand the engineering of diamond & gemstone setting.
- Poor workmanship caused by inadequate training.
- Paying stone setters per stone causing the setter to rush in order to make an adequate income.