Platinum is harder than gold and is not easily deformed.

(1), it is not convenient to do snap.

② It is not easy to deform, which leads to the ring stretching, so there is no need to slam.

2. Introduction to Platinum

Platinum is a chemical element, commonly known as platinum, belonging to the platinum group. Its chemical symbol Pt is one of the precious metals. The atomic weight is 195.078, slightly smaller than that of gold, and the atomic number is 78, which belongs to the transition metal.

Mohs hardness is 4-4.5. Platinum is insoluble in hydrochloric acid, sulfuric acid, nitric acid and alkali solution, but soluble in aqua regia and molten alkali.

3. Introduction to Kim

Gold is a metallic element, its chemical symbol is Au, and its atomic number is 79.

The simple substance (free form) of gold, commonly known as gold, is a popular precious metal, which has been used as currency, preservation and jewelry for many centuries. In nature, gold exists in the form of simple substance in gold nuggets or rocks, underground veins and alluvium. Gold is also one of the currency metals. Gold, a simple substance, is solid at room temperature, with high density, softness, brightness, corrosion resistance and the highest ductility and ductility among known metals.

Mohs hardness is 2.5-3.