Platinum is the strongest of all precious metals used for jewelry production1. Because of its strength it can be used at 95% purity – at that purity gold, for instance is way too soft to withstand the daily wear and tear that rings sustain. Therefore, we usually use gold at 60% purity – 14K gold – or 75% purity – 18K gold – for rings.2. Purity also produces a softness in all metals. The purer - the softer. Same goes for platinum.3. Softness means that the metal sustains scratches easier. The confusion comes when people mistakenly believe that gold doesn’t scratch.