Dress & Attire

Women wearing rings made of stone

Q: Could Mufti Saheb kindly advise if women are allowed to wear rings of stone. 

Alhamdulillah I have learnt that women are not allowed to wear rings of different metals besides gold or silver. But, are women allowed to wear rings completely made of jade, agate, other stones or possibly, other materials such as plastic?

Salafi woman saying that a woman should wear niqaab and gloves whenever her husband is not home

Q: I have been coming back to Islam since Ramadan alhamdulillah. Before Ramadan I practiced Western version of Sunni Islam by dress and behavior. Since then I'm feeling pull towards salafi methodology. 

I've begun being mentored by a kind salafi woman MashaAllah. 

She says a woman should cover with niqab and gloves any time her husband is not home, even if she's not being seen by non mahram. She said it's an act of worship and a way to show and ask Allah Ta'ala for extra protection while my husband (protector) is not home. 

Is there Islamic basis for this, is this from culture, or from her specifically?