Moss agates are natural,Everyone is similar but not the same. This is a moss agate engagement ring in solid gold,about 6.5mm Heart shaped. It can be made in any ring size. However please contact me to custom make it to a special big or small size. It can be made in white gold,rose gold or yellow gold with 14k or 18k. However for some people who are nickel allergic,I can also make it to 925 sterling silver to make you can wear it. The ring is handmade,very high quality! 30 days money back guarantee.