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唐人珠宝（珍珠）企业标准
Corporation standard of tangren pearl co.,Itd
一、总则
General principless
淡水珍珠（以下简称珍珠），色彩纷呈、形状百异，珍珠业界尚没有统一的等级标准，本标准就珍珠固有特性，以及与珍珠产品相关的技术,对珍珠及其产品等级标准进行界定，以此作为本公司珍珠类产品的质量标准和客户的订货标准。
Having a variety of colors and shapes, fresh-water pearls (here in after referred to as "pearls") do not have a uniform grading standard in the pearl market. In Corporation standard of tangren pearl co.,Itd accordance with pearls'intrinsic characteristic and relevant technology of pearl products, this grading standard explains our grading system of pearls and pearl products. It is regarded as our quality standard and criterion for customers to order our pearl products.
二、术语的定义
Definition of technical terms
2-1/颜色 Color
颜色是指珍珠的体色，伴色及晕彩的综合特征，它包括：
体色，珍珠对白光选择性吸收产生的颜色；
伴色，漂浮在珍珠表面的一种或几种颜色；
晕色，珍珠表面或表面下形成的可漂移的彩虹色；
对颜色的描述以体色描述为主，伴色和晕色描述为辅。
Color refers to the general character of pearl's body color, overtone and halatin, it includes: body color, the color produced by pearl itself when it selectively absorbs light reflects off the pearl surface. Halation, the rainbow- like movable color which is formed in the pearl surface. Body color takes the leading role while overtone and halation are in the supportive role in the description of pearl color.
2-2/大小 size
大小是指珍珠的尺寸,以珍珠能通过或不能通过的相隔0.5mm两个分珠筛之孔径规格的大小表示,如5.0mm-5.5mm。
Size refers to the diameter of pearls. Sizes are classified by two sieves with the difference of 0.5mm, for example, 5.0mm-5.5mm.
2-3/形状 shape
形状是指珍珠的外部形状，对普通形状珍珠，本公司以直径差的百分比来计算。
Shape is the outside form of pearls. The shape of ordinary pearls can be calculated by the percentage of diameter distance.
2-4/光泽 luster
光泽是指珍珠表面反射光的强度及映像的清晰度。
A combination of the pearl's exterior shine and glow from within. Luster is created by light reflected from tiny calciumcrystals within the pearl nacre.
2-5/光洁度 surface perfection
光洁度是指珍珠表面由瑕疵大小、颜色、位置及多少决定的光滑、洁净的总程度。
The surface qualities depends on the size, color, location and
quantity of spots on pearl’s surface.
2-6/匹配性 matching attribute
匹配性是指饰品中各单粒珍珠之间在形状、光泽、光洁度、颜色、大小等方面协调程度。
The arrangement of each pearl in a strand be in harmony in termes of shape, luster, surface quality and size.
三、质量因素和级别
Quality factors and grading
3-1/颜色 color
3-1.1/白色 white
经过漂洗或珍珠自然色的体色是白色的珍珠和珍珠产品，以W表示。
W represents pearls or pearl product with
white color after bleaching or white natural body color.
3-1.2/彩色系列
color series
仅经过增光和抛光等优化处理，未经改色，珍珠自然色的体色呈彩色，以N表示。通常不改色，用自然色直接用作首饰的各种色彩系列和表示方法如下：
N represents pearls with chromatic natural body color
after polishing.Natural colors remains for making various
colored jewelry series and the expression symbols are as follows:
3-1.3/染色系列 dying series
经过改色处理的，不论珍珠体色呈何种颜色，以D表示，常用的各种着色后的颜色和表示方法如下：
D represents pearls with various colors after the processing
of
dying colors and the expressions symbols are as follows:
3-2/大小
size
3-2.1/普通珍珠大小表示方法
Expressions of size for ordinary pearls
本公司对珍珠的大小以0.5mm的两个分珠筛片为一规格，Ф9mm以上珠串，因产量较小，有时以1mm为一规格，如有对珍珠规格有其它特殊要求需要向本公司作特别的说明。
Sizes are classified by two sieves with the
difference of 0.5mm. As for the strands above 9mm because of
their rarityin production, size classification is differed by
1mm. For any special request on sixe, a special instruction
will be given.
 
3-2.2/镶嵌用扁片珠和滴水珠的大小表示方法
Size expressions of button-shaped and dropshaped pearls for
3-2.2A/镶嵌用的扁片珠因为对它的厚度有要求,所以大小上除了普通的表示方法外,本公司另外规定标准和举例如图：
For the button-shaped pearl for incrustation, there is specialrequirement on its thickness. Except for the above expressions, we have an additional expression is as follow:
3-2.2B/镶嵌用的滴水珠因为对它的高度有要求,所以在大小上除了普通的表示方法外, 本公司另外规定标准和举例如图：
For the drop-shaped pearl for incrustation, there is specialrequirement on its height. Except for the general expressions, we have an additional expression is as follow:
3-3/形状 shape
3-3.1/圆形 round
圆形表示方法及图片对应如下：
Round shape's expressions and pictures are as follows:
3-3.2/短椭圆形（横形） short oval (side drilled)
短椭圆形表示方法及图片对应如下：
Short oval Shape's expressions and pictures are as follows:
3-3.3/长椭圆形（直打，俗称火形）long oval(straight drilled)
长椭圆形表示方法及图片对应如下：
Long oval Shape's expressions and pictures are as follows:
3-3.4/扁圆形 button-round
扁圆形表示方法及圆片对应如下：
Button-round shape's expressions and pictures are as follows:
3-3.5/异形 baroque
异形表示方法及图片对应如下：
Baroque shape's expressions and pictures are as follows:
3-4/光泽 luster
光泽表示方法及图片对应如下：
Luster expressions and pictures are as follows:
3-5/光泽度 surface perfection
3-5.1/普通珍珠光洁度 surface qualities of ordinary pearls
对普通珍珠光洁度的级别分类,表示方法及图片对应如下:
surface perfection expressions and pictures are as follows:
3-5.2/螺纹光洁度 surface qualities of striped pearls
实际生产中，用作首饰的淡水珍珠有相当多的比例表面有类似线条的瑕疵，其它表面基本光滑，俗称螺纹珠，本公司对螺纹珠的光洁度全部规定分类在C等级，再根据线条的多少和深浅，细分等级表示方法及图片对应如下：
During the production, freshwater pearls for making jewelry have a large percentage of strips on surface. Exceptthese, they are basically smooth. These pearls are named striped pearls. We have grouped striped pearls into grade C.According to the percentage of strips and their depth, they can be further graded and the expression symbols and pictures are as follows.
3-6/匹配性 Matching
在串珠中如果涉及匹配性的要求，规定分类，表示方法及图片对应如下：
During the stringing process, matching has to be taken into consideration Grading and expressions are
asfollows:
3-7/其他 Others
3-7.1/串珠长度 length of strands
本公司串珠长度均为16寸，如有不同长度，请说明。
The length of our products is usually 16 inches. For Any special requirement in length, please kindly advise.
3-7.2/打结与链扣 knotting and clasp
本公司串珠均为半成品供应，如需打结与链扣，请说明。
Our products are usually supplied as semi-finished goods. For knotting and clasp requirement, please kindly advise.
3-7.3/总体质量 overall quality
以90%达到的级别定为总体质量质别。
The target of overall value factors is set at 90% up to grade.
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