KL represents the manufacturer’s code, and PT950 represents the ring material.

Pt950 refers to jewelry containing 95% platinum, the remaining 5% is other precious metals, and is marked Pt950.

Platinum is so flexible that just 1 gram of platinum can be stretched into filaments over a mile (nearly 2 kilometers) long.

This quality, combined with platinum's strength, allows jewelers to create extremely flexible mesh-like platinum jewelry that is simply not possible with other precious metals.

Extended information:

Pt950 uses:

In addition to strength and density, platinum also has another outstanding quality: flexibility.

Platinum is so flexible that just 1 gram of platinum can be stretched into filaments over a mile (nearly 2 kilometers) long. This quality, combined with platinum's strength, allows jewelers to create extremely flexible mesh-like platinum jewelry that is absolutely impossible with other precious metals.

Platinum is also indispensable in other areas: it is used in industry, most notably in catalytic reactors.

Platinum also plays an important role in the medical field. It is not affected by blood oxidation, has excellent conductivity, and is compatible with living tissue.

Due to these properties, platinum is used in pacemakers.

Currently, more than 50,000 people live healthy lives relying on pacemakers. For them, platinum is a life-saving metal.

Baidu Encyclopedia_Pt950