I wouldn't want to damage them. I do not think it's gold. The chain tests as sterling silver. The largest moonstone is 14mm by 11mm. Check out my other items.If you have questions - please message me. The item "Antique Victorian Edwardian Moonstone Drop Necklace on a sterling silver chain" is in sale since Thursday, April 11, 2019. This item is in the category "Jewellery & Watches\Vintage & Antique Jewellery\Vintage Fine Jewellery\Victorian (1837-1901)".affair" and is located in Leeds. This item can be shipped to all countries in Europe, all countries in continental Asia, United States, Canada, Australia.