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22k has a higher grade then a 14k so therefor 22k is worth more
'14k' means that the ring is 14 karat gold. It is alloyed with another metal to harden its wearability. NB 24k is pure gold 22k may be found in gold objects 18k gold jewellery e.g. dress rings. 'r' is probably the makers reference.
Pure gold is 24 carats. 22 carats is 91.6% ie 22/24. Another method of describing gold is by the Fineness, which is given in parts per 1000, hence 916.6 for 22 carat. I assume 91.3% is a typo.
The amount of gold in a wedding band, depends on the karats. If a wedding band is 14 karat gold, that means 14 parts of 24 parts is gold.
The abbreviation would be "1g Au" but it would not mean much without the purity (fine, 24K, 22K, 18K).