First of all, your necklace is PD, and PD is palladium. The price is similar, but it doesn't keep the value, which means it's worthless to sell. As for the pendant, the diamond of 12 is also inlaid with PD, which is not good-looking. More than 3000 is obviously expensive. Now all the diamonds in the world are inlaid with PT950 or AU75, and now most of the diamond pendants are bought with PD necklaces. You also bought PD necklaces separately. Then your ring, is it Chow Tai Fook's? 8-point diamond PD inlay is still more than 3000. It's expensive. Chow Tai Fook specializes in gold. I know their diamonds can't be exchanged for free. Nowadays, many diamond ornaments offer free style change for life. What is your diamond certificate? You didn't give me the grade of two diamonds, and I can't help you distinguish between good and bad.