Answer
(Fatwa: 656/J)
عن علی رضی اللہ عنہ ان النبي صلی اللہ علیہ وسلم اخذ حریرا فجعلہ في یمینہ و اخذ ذھبا فجعلہ في شمالہ ، ثم قال: ان ھذین حرام علی ذکور امتي، رواہ احمد و ابوداود والنسائی (مشکوة المصابیح، کتاب اللباس، باب الخاتم ص 378)
Hazrat Ali narrates that once the Prophet (Sallallahu Alaihi Wasallam) held Hareer (silk) in his right hand and took gold in his left hand and said: both of these two are haraam (prohibited) on the males of my Ummah (people).
According to the Hadith, wearing gold is prohibited for males. As far as the matter of silver is concerned, it is allowed to wear a quantity of one Misqaal (=4.374 mg) as ring, not more than that.
What is white gold? We tried to find it out, but there were different views; therefore you yourself are requested to explain it and ask the question again.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband