White Gold vs Platinum
For thousands of years jewelers have used Gold to create ‘fine jewelry’ for pharaohs, kings and those wishing to express love, appreciation and commitment.
Pure fine gold [24 karat] is intrinsically soft and impractical for jewelry items to be worn regularly. To overcome this, jewelers over time perfected ‘gold based’ metals with the hardness characteristics necessary to prevent a piece from bending easily, yet malleable enough for craftsmen to create jewelry that can be passed on for generations.
14k and 18k gold is created by blending other metals [alloy] to the fine gold:
18k gold = 18/24ths [75%] fine gold; 14k gold is 14/24ths [58.3%] fine gold.
White gold or rose gold is produced by modifying the alloy to include more silver or palladium [for white gold] or more copper [for rose gold].
White gold is often plated with Rhodium [a costly naturally white metal] in order to make the white gold ‘extra white’. With regular wear Rhodium plating tends to come off, however is easily replaced for a modest charge.
Platinum is an intrinsically white hypoallergenic metal.
Like fine gold, pure platinum is soft and requires a small percentage of alloy to create a ‘Platinum based’ metal strong enough for practical use yet pliable for craftsmen.
Most platinum based metal is 90-95% pure platinum with the balance a blend of different alloys.
Platinum is significantly more dense than 14k or 18k gold and the identical piece in platinum will weigh 60% to 80% more than 14k or 18k gold.
The additional density [weight] of platinum combined with the higher value of Platinum results in a higher cost for the same design.
Depending upon the weight of a ring there would be an additional cost for Platinum over 14k or 18k gold somewhere in the range of $300 to $800.