The necklace is made of .925 sterling silver and is all handmade. I use silver to fold the pendant so it shares the same structure as a paper origami. The mother's heart is plated in beautiful rose gold. The big heart represents mother while the small heart represents her child. This is by far my sweetest design and I hope it touches all mother's hearts. /Engraving/ Kindly write down engraving content at the remark area when you place the order. Each pendant allows two characters (Can be English or Chinese) on the top and a date at the bottom. It can be lovers, family members, pets initials and the special date between you. Due to limited space, we recommend the content below: . https://c2.staticflickr.com/8/7917/45871808085_de3a6567ff_c.jpg . Write down the engraving content at the remark area when you place the order, or send me the content by using the tab "Contact designer" on your order page. Due to the limited area, it is recommended to engrave names and date only. /Material/ 925-999 sterling silver /Pendant Size / Approx. 13mm(W) x 11mm(H) /Necklace length/ 16" (18" is also available with extra HKD20. After you buy this necklace, you may buy two of the following item to pay the additional cost: https://www.pinkoi.com/product/qJeabrqj?category=99 Please remark 18" in the order.) /Production time (Mother's day arrangement) / For Hong Kong buyers, if you want to receive it by Mother's Day, please place the order on or before 2pm on 9 May. I can ship by HK Post registered post or SF (both are free shipping). After 9 May, you may pick up your order at a designated area. For international buyer, if you wish to receive it by Mother's Day, it is necessary to use SpeedPost and customer need to pay for the shipping. The cut off time is at 2pm on 9 May. If you do not need to receive it by Mother's Day, production time plus shipping time is around 10-15 days and I'll send it through Hong Kong Post Registered Post and it's free shipping. /Packaging/ Hard and thick paper jewellery box with black velvet sponge inside. Box cover carries Green Rivor logo of three girls playing under a tree. *Please note that it is a handmade product, so each one will turn out slightly different from that in the picture.