In general Golden and Silver Rune emblems where created to replace old runes overcharged during the Summer Update in 2010. Today they are given as reward at contest/events performed by the official Fansites.
During Tibia's 15th Anniversary celebration you coul obtain some of them at Denson Larika raids that use occur once a day.
You can get Silver Rune Emblems at some quest, take a look to the lsit:
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