I tried what you've said.
Here's my item_db2.txt
30189,Snowflake_Ring,Snowflake Ring,5,100000,,10,,10,,0,0xFFFFFFFF,7,2,1,,0,0,1535,{ bonus bAllStats,3; },{},{}
31050,Snowflake_Ring,Snowflake Ring,5,100000,,10,,10,,0,0xFFFFFFFF,7,2,4096,,0,0,1535,{},{},{}
Here's the item_avail.txt
31050,30189
I can equip the 31050 into my Style Tab but there're no sprite shown like in my first post(Day Ring)