Both the top and the stem tested positive for 14K. Top is about 9/16 diameter.
Jade piece about 6.5mm diameter. Larger items may be more. The item "Antique Chinese 14K Gold Jadeite Imperial Dragon Stickpin Pin Qing Dynasty Jade" is in sale since Tuesday, July 16, 2019. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Asian & East Indian".The seller is "whatisthing" and is located in New York, New York. This item can be shipped worldwide.