How to classify red and blue treasure colors Usually the more pure and rich the ruby ​​color, the higher the quality and the higher the value. The color of a gem is the color that a gem presents in natural light. So how is the color of red and blue treasure graded? The red sapphire color grading is observed as follows: 1. Place the gemstone under a white background; 2. Observed from the gem table; 3. Observe the ruby ​​under natural light. After combining various factors affecting the color of red sapphire, we divided the red sapphire into five levels, including ruby, red, medium red, light red, and light red. Consumers can simply grade the ruby ​​color by simply comparing the five levels of ruby. When grading colors, it is necessary to consider the effect of uniformity of color distribution and anti-fire (internal reflection light caused by cutting) on ​​the grading of ruby ​​color. Usually, they can raise or decrease the color level of red sapphire by one sub-level.
Jacquard Velvet Sofa Fabric
We specialize in producing all kinds of cotton.polyester.modal velvet series．rayon.bImboo fiber slub velvet series．stripe.sprout velvet series．stretch velvet series．Jacquard velvet series,printing．embossing.burn-out.ebroidery.embroidery.bronzing.wrinkle.crumple and other finishing velvet series．which are environmental.high color-fastness.bright color.fuliness.feeling soft.clear stripe.elasticity,elc;mainly made of men and women suits．casual wear and gportswear,shoes,hats,Children clothing and other apparel products．Decoration of KTV and hotel,sofa,curtain,bedding．cushion and other home textilc products and crafts．etc． Wc also specialize in warp knitting velvet．Their main materiaI are polyester,cation,rayon．Dyeing series mainly include ice flower faux velvet and down pile faux velvet．After finishing procedure have brushing．embossing,burnt out,bronving,printing,crumpling,embroidery etc;which are environmental.high color-fastness.1ight resistance. strong tear strength,stable pile fastncss．fullness.feeling soft etc,mainly made for Decoration of KTV and hotel,sofa,seamless wallpaper,curtain,cushion and other home textile products and so on． Jacquard Velvet Sofa Fabric,Emerald Green Velvet Fabric,Dark Blue Velvet,Yellow Velvet Fabric Shaoxing Zhaofeng Velvet Co., Ltd , https://www.zhaofengvelvet.com