纯金还是镀金？

有谁知道这是纯金的还是镀金的？这是我第一次购买更昂贵的珠宝。在我看来，纯金的价格太高了，但我想听听第二个意见。谢谢 ！

https://preview.redd.it/92yq6w25vvnd1.jpg?width=1080&format=pjpg&auto=webp&s=2d97358148b40738faf72669dbb1775904df29e8

https://preview.redd.it/in003v25vvnd1.jpg?width=1080&format=pjpg&auto=webp&s=ead7d4e41bbadae43a5c5f07a84f3f8ad28c3ab8

https://preview.redd.it/g2lnfo25vvnd1.jpg?width=1080&format=pjpg&auto=webp&s=0e111f7e27be8ed45e217d7ba5a0cf05a74f8c65