Company name.
HCT is the maker of the jewelry
Platinum
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"S26" is likely a marking that indicates the type of material used in the jewelry piece, such as sterling silver with a purity of 92.5%. It is a common marking on jewelry to signify the composition of the metal used.
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375 is the marking for 9 carat gold. Usually vintage European will have this marking.
The marking "SAL" on jewelry typically stands for "Sterling A.L." which indicates that the piece is made of sterling silver. Sterling silver is an alloy containing 92.5% silver and 7.5% of other metals, usually copper. This marking is a guarantee of the quality and purity of the silver used in the jewelry piece.
The marking "264" on gold jewelry typically indicates the purity of the gold alloy used in the piece. The number represents the proportion of gold in the alloy, with "264" meaning the jewelry contains 26.4% pure gold, which corresponds to approximately 6.35 karats. This marking helps consumers understand the quality and value of the gold jewelry they are purchasing.
VCLM jewelry is vintage pieces of costume jewelry with a specific marking of "VCLM." They are created by the vintage jewelry company VCLM.
The 833 marking on gold signifies that it is 833 parts pure out of 1000. Translated to karats this would be 20kt, a popular purity used in Portuguese jewelry.
The jewelry marking "GQ14K" indicates that the piece is made of 14-karat gold, which contains 58.3% pure gold mixed with other metals for durability. The "GQ" prefix may signify the manufacturer's or designer's initials or brand name. This marking helps identify the quality and authenticity of the gold content in the jewelry.
The 'PW' is the abbreviation for "PRICE WATCH".