The term PT stands for platinum, and PT950 refers to the number of pure platinum parts per thousand. Because platinum alloys are 90 percent to 95 percent pure, they account for a higher percentage of an item’s weight.
Because the word “Platinum” must be preceded by the purity for alloys of platinum between 850 and 950 parts per thousand, the number 950 frequently follows the PT acronym. Platinum is quite dense, hence it weighs more than gold. Platinum is a popular choice for diamond settings due to its colour, hardness, and longevity, and it is sometimes alloyed with iridium or ruthenium for added strength. Because of its density, purity, and lengthier manufacture time, platinum is more expensive than white gold.
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