答案：

云状体、针点、加工残留未标示。
说实话很少见到manufacturing remnants 这个描述

“Manufacturing remnant” – this a new term people might have come across , specially who get their diamonds certified by GIA. It has been observed that usage of laser for cutting of diamonds have become very common. During this manufacturing process a diamond may have some imperfections which can disturb internal or external structure of a diamond. External (surfacial) imperfections will be covered under polish while Internal imperfections will be affect clarity as per GIA standards.

以下是译文，仅供参考~~如有错漏，请大家指正。

“制造残余” - 这是一个人们在选购钻石的时候可能会遇到的新名词，特别是带有GIA证书的钻石。使用激光切割的钻石已经变得非常普遍，然而在这个生产过程中的钻石可能有一些不完善的地方，可以扰乱钻石的内部或外部结构。外在的不完善在抛光后会被掩盖，而内部缺陷将影响到GIA标准里面钻石的净度。