one is gold and one is sil
Its probably STG SIL which stands for Sterling Silver.
925 SIL on a gold ring typically stands for "925 Silver," indicating that the metal used is sterling silver, which contains 92.5% pure silver. It is common for jewelry to have other metals mixed in with gold to make it more durable, and sterling silver is a popular choice for this purpose.
Sil Austin was born in 1929.
SIL International was created in 1934.
Narasingha Sil was born in 1937.
Karu-Sil was created in 2007.
Sil Austin died in 2001.
Sanjit Sil goes by Tonkai.
Ham Bong-Sil was born in 1974.
Kwon Un-Sil was born in 1983.
Yoo Young-Sil was born in 1973.