Mars is a cruel and fiery planet which appears copper red in color. The mantras for Mars are as follows:
"ऊँ अग्निमूर्धादिव: ककुत्पति: पृथिव्यअयम। अपा रेता सिजिन्नवति ।"
ऊँ क्षिति पुत्राय विदमहे लोहितांगाय धीमहि-तन्नो भौम: प्रचोदयात
ॐ ॐ अंगारकाय नम:।
ऊँ हां हंस: खं ख:
ऊँ हूं श्रीं मंगलाय नम:
ऊँ क्रां क्रीं क्रौं स: भौमाय नम:
Red coral is the stone for Mars and can be worn if Mars is debilitated in a horoscope or it is benefic in nature for the ascendant. Otherwise one can wear Jasper, red garnet, red pearl as substones
ENG
हिन्दी 
Sun
Moon
Mars
Venus
Mercury
Jupiter
Saturn
Rahu
Ketu