Gauge in a gold cable chain is not just a style decision. Because weight is directly proportional to gauge and metal density, the heavier the chain, the more gold is actually there.
Stone Story
The Gemological Institute of America introduced the 4Cs grading system in the 1950s as part of a broader effort to standardize diamond evaluation. The framework replaced a fragmented set of regional and dealer-specific grading conventions with a single set of criteria applicable across markets.
Elemental Detail
Color and gold content are separate considerations in 14kt white gold. The 58.3% pure gold is the same as any 14kt piece, the white tone produced by the alloying metals rather than by any departure from standard purity.