| Product Name | Yellow opal nacelace |
| Material | opal |
| Size | refer to SKU |
| Net Weight | big size about 30g(different size different Weight) |
| Payment | PayPal only |
| About Material | Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. The name opal is believed to be derived from the Sanskrit word upala (उपल), which means 'jewel', and later the Greek derivative opállios (ὀπάλλιος), which means 'to see a change in color'. There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence); common opal does not.Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light." The internal structure of precious opal causes it to diffract light, resulting in play-of-color. Depending on the conditions in which it formed, opal may be transparent, translucent, or opaque, and the background color may be white, black, or nearly any color of the visual spectrum. Black opal is considered the rarest, while white, gray, and green opals are the most common. |
| Delivery Time | Customzied order takes 7-14 days, stock goods can be shipped out the second day after payment. |
| Shipment | Express：FEDEX/TNT/DHL/UPS radom Mode: air transportation Express time limit: about 7-15 days (There are some differences in different countries or regions. Please refer to the actual delivery date) |
| Tips | Because the pictures are taken by real objects, slight color differences may occur due to shooting angle, lighting, display screen and other reasons,this is an inevitable problem in online sales. Please understand and take the products received as the criterion |
| Customer Satisfaction | Please contact us if you have any questions or concerns before or when or after your purchase. |
