Ma'arif al-Qur'an
Mufti Muhammad Shafiأَوَمَن يُنَشَّأُ فِي الْحِلْيَةِ (Is it that (Allah has chosen) those (as His offspring) who are grown up in ornaments,... 43:18). This tells us that use of ornaments and adornment in accordance with 'Shari'ah is permissible for women. As such, there is consensus on this issue, but at the same time the manner of speech indicates that getting so much involved in adornment that one is busy in it the whole day long, is not proper; it is not only a symptom of one's being short-sighted, but also a cause of it.وَهُوَ فِي الْخِصَامِ غَيْرُ مُبِينٍ (and who cannot express themselves in debate clearly - 18). This reflects the reality that a great majority of women do not have the same ability as men to express their feelings clearly. Therefore, if it comes to argumentation, it is difficult for them to prove their own contention and to refute the other's arguments in a clear manner. But this applies to the majority.
If some women are eloquent in their speech and excel even men in this regard, it does not go against this verse, because the rule applies to the majority, and not to every single individual.