Cross On The Base Of Index Finger Or Cross On Mount Of Jupiter :- Cross on Jupiter hill indicates good marriage.
Cross on Mount of Jupiter is very common sign because you will find a vertical line from lifeline crossed by a horizontal line on Mount of Jupiter on many hands.
Some palmists follow above theory but some palmists opinion is that cross should be independent on Jupiter Mount.
As per palmistry books mostly in Indian Palmistry books you will find that cross on Jupiter Mounts indicates good marriage, marry to famous and rich person, change of status after marriage, etc but in my personal experience these things are not always true and cross should be independent on Mount of Jupiter.
However, cross is considered auspicious and gives good result on Mount of Jupiter and also on above bracelet lines.