N.J. Stat. Ann. § 51:6-6

Whenever provided for in this chapter except as specifically excepted in paragraph "d" of section 51:6-5 of this title, the word "platinum" may be applied by spelling it out in full or by abbreviation "Plat." ; the word "iridium" may be applied by spelling it out in full or by abbreviation "Irid." ; the word "palladium" may be applied by spelling it out in full or by the abbreviation "Pall." ; the word "ruthenium" may be applied by spelling it out in full or by the abbreviation "Ruth." ; the word "rhodium" may be applied by spelling it out in full or by the abbreviation "Rhod." ; and the word "osmium" may be applied by spelling it out in full or by the abbreviation "Osmi."