Well jewels can reside in table warehouse in items column with binaries in for example these values:
1E 00 00 00 00 00 64 00 00 C0 00 //bundle of bless
1E 00 00 00 00 00 65 00 00 C0 00 //bundle of Soul
88 00 00 00 00 00 66 00 00 c0 00 //bundle of life
It would be wonderful if we will know how to remove those from the binary column and convert it into an integer value in the memb_info table for example... you know some articles or guides?