Natural Aquamarine Halo Necklace metal: 14k white gold over silver base Gemstone 1 round Aquamarine Total carat weight 1.85 total item weigh 2.8g necklace lock spring ring gemstone 18 Topazes Total carat weight .15 shape round color White width 10mm gender ladies Chain 15 inches with 2 inch extender Pictures are super-sized to show detail, please read item dimensions carefully. All weights and measurements are approximate and may vary, slightly, from the listed information. *Diamond Alternatives are not genuine diamonds; they are a less expensive alternative. Care Instructions: Wash gently in warm water Gift Box and same day shipping! **Diamond Alternatives are stones that have different chemical composition from real diamonds and are also known as diamond simulants, simulated diamonds, faux diamonds, and diamond imitations. These imitations can be either synthetic or natural such as topaz or sapphire. (Synthetic diamonds, on the other hand, have the same chemical composition as real diamonds and are not considered fake.) A loupe is a magnifying glass that you can buy at any jewelry store and will let you take a closer look at your gem and setting. The majority of diamonds are made in nature so that means you’re going to see some imperfections. A fake stone would be absolutely perfect.