A local jeweler tried to steer me away from 18K ct. gold setting for a diamond solitaire due to a softer metal. But, I like the yellowier color on 18K vs. 14K. Then, the jeweler said that 14K white gold was better than 14K yellow due to it was more durable and had a better mix of metals that would make it more durable. But, platinum is the hardest and most durable (although more expensive). I have also had it recommended to me to have a 14K yellow gold with Platinum crown for better durability. The jeweler also said their 14K white gold had an outside coating that made it look whiter in the display case, but that coating may wear off a little. I''m not sure I would be interested in silvery plated white gold, but it seems to becoming more popular these days. Any comments? Sorry if this is not the right forum for this question.