Gold top Pendant with 13 rubies & 6 diamonds 1.9grams vintage

Gold Pendant with 13 rubies & 6 diamonds 1.9grams vintage
Gold is unmarked and passes a 10k top acid test.
Item tests as 50% gold, 30% copper, 15% silver, and 5% zinc with analyzer.
Gems are rubies and diamonds, not high grade but attractive.
Vintage