. • if your jewellery suffers a shock or hit, the stone setting may need to be checked. avoid forcing clasps, joints and metal frames and be sure to check that the clasp and safety latch close properly. if you have any concerns, you should not wear your jewel until you have had it checked by an expert...
on the binding parchment is also extremely affected by its environment and changes in humidity, which can cause buckling. books with parchment pages were bound with strong wooden boards and clamped tightly shut by metal (often brass) clasps or leather straps; [ ] this acted to keep the pages pressed...