Gemstone size: Opal (8mm); reasonable size difference is + / - 2mm. Overall chain length: 23m; reasonable difference is + / - 1cm ● Elastic thread for easy wearing The length of the product will vary from person to person. Please ask the designer if you have any concerns about the length. [Accessories] International Standard 925 sterling silver plated 18k platinum ● (highly anti-oxidation, anti-allergy) ●Natural stone The characteristics of each natural stone are different. It is inevitable that there will be mineral shortage, slight color fade, slight difference in texture, or slight scratches on the surface. It is not caused by human damage. Because of this, every piece made of natural stone is unique. https://live.staticflickr.com/65535/49203378007_dca81241c8_z.jpg https://live.staticflickr.com/65535/49202683693_588a2a167f_z.jpg https://live.staticflickr.com/65535/49202683753_060b01fc3e_z.jpg Nato Crystal's creative inspiration is free from heart. From life, up to the sky, down to a small stone, when inspirations come to the designers, they will write down the manuscript immediately and put them into products. So there will be new designs, and every product has its own meaning, just like the name of our brand. https://youtu.be/o1NJJDEZDAA https://youtu.be/K4a1EfmhVJ8 https://youtu.be/TAy--LLgYbM [Nato - the meaning of the birth in Spanish] Every product takes a lot of time from design to production, and we use our own hands to make it ourselves. Therefore, each of them is one of a kind. I hope that every item can be made as unique as possible, instead of being shoddy. We have a strong commitment to the quality of crystal. All the crystals that are selected for making jewelry are of high quality. We hope that we can bring the best things to all of you who put quality on the top of the list. *Please respect the originality, it is strictly forbidden to copy any designs and graphics of the Nato Crystal brand. Once coping is unfortunately found, lawsuit will be issued. [purchase reminder] Jewelry only accepts defects for return (i.e. beads ore crystal diamonds, etc., the original break, fall off). The remaining size, texture, surface scratches, color differences are not within the defects mentioned. Therefore, they are NOT accepted as reasons for return. Perfectionists should think twice before buying. All products will be carefully inspected before shipment. Except for major defects, otherwise the products cannot be returned. It is also unacceptable to exchange goods after it is used. [Receipt Notice] After receiving the goods, please check if the goods are in reasonable conditions. If there is any problem with the goods, please let us know and we will help you as soon as possible. [jewelry maintenance] ● Clean the dust and sweat stains on the surface of the jewelry after daily wear, and then put it in a pouch or a jewelry box to block the air. ● Since all products are pure silver and then plated with 18K platinum, it is highly effective against oxidation and darkening. ● The appearance of the product will vary depending on usage habits, time storage, and storage methods. The reason why jewelry will oxidize is mostly because the environment is too humid, such as, sweat after exercise, spray perfume after wearing jewelry, hot springs, etc. Therefore, try to avoid touching the water for a long time when you wear it. After removing it, clean the dust and sweat stains on the jewelry and keep it dry, then put it into the jewelry box or some container where the air is blocked so as to extend the life of the jewelry. Avoid wearing jewelry when doing heavy work, which may scratch the surface of the jewelry easily. ●If it becomes black after wearing for a long time, you can also wipe it with a silver cloth. [Color difference problem] The photo is taken from a real product. Due to the difference between computer display, shooting light and lighting and personal perception, there is a problem of color difference. The products are mainly real products, and you can ask the designer if you have doubts about the color. *Image is for reference only *Each spar has a unique color, crack, a natural certificate. Perfectionist please think twice *Photos are taken from real products. The natural color of spar will be slightly different due to the angle, lighting and PC screen brightness. ǁ Reminders about shipment ǁ Hong Kong: Free shipping to SF Station for pick-up. If you need SF to send to the residential address, please contact Shunfeng for additional fees. Taiwan/Macau: Taiwan/Macau areas are sent by SF Express. After Taiwanese customers confirm the order, please note the ID number for customs clearance. (The ID card number is a legal requirement for customs clearance in Taiwan. For details, please read the overseas goods purchase notice: https://pinkoi.zendesk.com/hc/zh-tw/articles/115011295747 When purchasing overseas goods - need to provide identity card number -) If the relevant information is not received within five days, the designer will authorize Pinkoi for refund China and other regions: They are sent by postal mail with the tracking function of the Hongkong Post Office. *All import and export tariffs are the responsibility of the buyer. *Overseas order delivery time includes complicated customs clearance procedures, the actual arrival time cannot be confirmed, and any urgent items will not be accepted. *All products are sent from Hong Kong. We can't accurately predict the arrival date of all orders, especially overseas orders! It depends on the process and customs clearance procedures of the post office and local customs. It is not the scope that the designer can control. Please be patient. Thank you. **If any dispute arises, the Chinese version of the company's policy will be used as the reference.