These butane 15” candles are made of aluminum and are a gold color. They are filled through a valve at the bottom. I bought these vintage candles at a antiques/collectibles store about 25 years ago. I have never used them and I don’t think they’ve ever been used. We moved soon after, my husband died suddenly and they were lost in the chaos. I found them this week going through boxes to downsize. They are still in the box, though it is showing some age. The candle look new.