12 Gauge Earrings In Mm. Gauge is abbreviated g.gauge sizes are usually a number followed by g or the word gauge.gauge sizes work in reverse. meaning that higher numbers (like 16 gauge) are thinner than smaller numbers (like a 6 gauge). 8 mm = 0.31 inch;
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An 18 gauge earring measures approximately 1.0 mm and a 16 gauge earring measures approximately 1.2 mm. for a difference of 0.2 mm. 18 mm = 0.7 inch Our thick gauged hoops are for 16. 14. 12 and 10 gauge and come in sizes from 6mm to 50mm.