手镯自古以来多指用金银、玉、象牙等制成的戴在手腕上的环形装饰品。按结构，一般可分为两种：一是封闭形圆环，以玉石材料为多；二是有端口或数个链片，以金属材料居多。按制作材料，可分为金手镯、 银手镯 、玉手镯 、镶宝石手镯 、象手镯等。

  象牙手镯指用象上腭的门牙雕塑成的手镯工艺品。象牙是有机类物质，比较娇气。除要防止冲击、摔碰、挤压、火烧、水浸、酸碱等剧烈侵害外，对温度、湿度、光照、环境整洁都很敏感。温度不稳定会发生热胀冷缩，易引起变形、龟裂、掉片，湿度不稳定会产生失水吸水，引起胀缩。象牙产品喜欢偏潮湿的环境，干燥易发生干裂，但太潮湿易发生霉变。一般要求温度在15-25°C，湿度在 55%-60%之间。

  老象牙制品有着独特的光泽和润度，真正的老牙有着厚重的包浆，而且深浅不一，裸露或人接触较多的地方，包浆犹如一层琥珀，呈现半透光泽，让人爱不释手。此组象牙手镯为老象牙手镯，符合市场交易准则，可正常用于市面交易。且此组件象牙手镯表面色泽光滑，质地温润，颜色金黄做工尤为精美，极具收藏投资价值。

  Since ancient times, bracelets mostly refer to ring ornaments made of gold, silver, jade, ivory, etc. According to the structure, it can be generally divided into two kinds: one is the closed ring, which is mainly made of jade material; Second, there are ports or several chain pieces, most of which are made of metal materials. According to the material, it can be divided into gold bracelet, silver bracelet, jade bracelet, gem inlaid bracelet, elephant bracelet, etc.

Ivory Bracelet refers to the bracelet handicraft which is carved with the front teeth like the upper palate. Ivory is an organic material, which is delicate. It is sensitive to temperature, humidity, light and clean environment in addition to preventing severe damage such as impact, collision, extrusion, fire, water immersion and acid-base. Unstable temperature will cause thermal expansion and cold contraction, which is easy to cause deformation, cracking and flake falling. Unstable humidity will cause water loss and water absorption, which will cause expansion and contraction. Ivory products like wet environment, dry easy to crack, but too wet easy to mildew. Generally, the temperature is 15-25 ℃ ° C. The humidity is between 55% and 60%.

Old ivory products have a unique luster and smoothness. The real old teeth have thick pulp, and the depth is different. Where there are more exposed or people contact, the pulp is like a layer of amber, showing a semi transparent luster, which makes people love it. This set of ivory bracelets are old ones, which are in line with the market trading standards and can be normally used for market trading. The ivory bracelet has smooth surface color, warm texture, golden color and exquisite workmanship, which is of great collection and investment value.