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A range
Scope of this standard provides for the purity of precious metals in jewelry (without welding components, but content of finished product shall wow game not be below the stipulated range of purity), seal, measuring wow gold eu method and precious metal jewellery naming method.
This standard applies to the jewelry trade and domestic production warcraft and sales of jewelry.
Two reference standard
The following standards contain gold guide provisions adopted in this standard reference constitute provisions of this standard. best gold Publication of this standard,fast wow gold versions shown are valid. All standards are revised, the use of this standard shall explore the possibilities of the latest version using the following criteria.
GB/T 9288-1998 jewelry gold content analysis methods
GB/T 11886-1989 Jewelry Silver content of chemical analysis methods
GB/T 16552-1996 gem cheap gold name
GB/T 16553-1996 gem identification
GB/T 16554-1996 diamond grading
Platinum jewelry QB/T 1656-1992 chemical analysis method for determining the amount of Palladium, rhodium, Platinum
QB/T 1689-1993 precious metal jewelry terminology
Three definitions
This standard uses the following definition.
3.1 purity
Minimum content of precious metals, to thousands of scores of precious metal content measure.
Four purity range
Purity expressed as a minimum, there shall be no negative tolerance. 4.1 purity of precious metals cheapest wow gold and their alloys ranges see table 1.
4.wow power 2 gold content of gold jewelry because of their use requires accessories shall not be less than 900%.
4.3 Platinum content in cheap wow gold platinum alloy jewelry should comply with the requirements of table 1, shall not be less than total 950% of Platinum and Palladium.
4.4 precious metal and its alloy jewelry shall not be mixed make gold with harmful elements. Example: the wow gold us nickel content of less than 0.3%.
Mark of the five jewels
Imprinting refers to print on the jewelry of precious metal jewelry identified.
5.1 mark content
Imprinting should include: manufacturer code number, purity, materials, and diamond jewelry diamond (0.10 Carat or more) quality. For example: Beijing filigree mosaic plant wowgold the mark of the 18K buy cheap wow gold gold inlay 0.45 carats of diamond jewelry are: Beijing A18K wow account gold 0.45ct (d).
Table 1 thousand score minimum purity of precious metals and their alloys other method for purity of gold and gold buy gold alloy 375
585
750
916
990
（999）9K
14K
18K
22K
Gold
(instant gold In thousands of gold), Platinum (Platinum) and their alloys 950
Platinum 990 feet (foot Platinum) silver and copper alloy 800
925
990 pure silver notes: the value is not within the brackets is preferred
5.2 representation of purity
Hit the mark as provided in table 1, or according to the actual content of the mark.
5.2.1 the purity of gold jewelry to thousands of scores (k) as gold or g before. Example: the Golden 750,G18K.
5.2.2 purity of Platinum jewelry to thousands of scores as pt or PT. Example: 990,pt990 or foot Platinum.wow level
5.2.3 purity before thousands of free gold scores as silver or silver jewelry to s. Example: Silver 925,S925.
5.2.4 when using different materials or purity of precious metals when making jewellery, wow gold and purity of materials respectively.
5.2.5 when jewelry due to reasons such as too small is too small when there is no print record, containing the mark identifies the contents of should be attached.
Six world of warcraft methods for determination of purity of precious metal jewellery
Recognized methods should be adopted for the determination. When the test results when differences arise, arbitration method using GB/T 9288,GB/T 11886,QB/T 1656 respectively.
Seven rules of naming
7.1 purity of precious metal jewellery should be named name, a variety of content, materials, precious stones. For example: 18K gold ruby ring.
7.2 precious metal jewelry wow guide varieties are named according to the buy wow gold QB/T provisions of 1689.
7.3 identification of inlaid precious stones and named as GB/T 16552,GB/T 16553,GB/T 16,554. Mosaic jewelry gem on quality grading as a reference level.