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有防丢需求的用户需要频繁手动开关的尴尬场景。 金字塔顶端的是椭圆形机芯的千禧系列，陀飞轮、三问、新擒纵系统粉墨登场；中间的是皇家橡树系列，多种高新材质纷至沓来，各种工艺不厌其烦，但却绝不盲目；后是心头旧爱jules audemars，超薄、月相星期日历、两地时、手动、自动上弦，5大基础款式构成了坚实的底座。
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爱格纳aigner手表品牌介绍
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1911年一枚浪琴古董表。其后经制表师们不断钻研改良，配合时尚的外形和先进的功能，继而演变成现代新的浪琴表典藏系列腕表。 2008年，浪琴推出了康卡斯系列。康卡斯系列呈?了品牌的运动经典。此系列腕表固定表圈和半圆型瓷石装饰的把头设计,是品牌对美学的深入研究的成果,表圈的原料取材陶瓷，不仅展示了一种永恒的典雅，还具有防刮花表面及非凡硬度的特性。或部分款式还取材抛光精钢。工艺精湛的浪琴表康卡斯系列,呈?了其典雅气质及超凡性 浪琴longines-海军上将系列 l3.666.4.76.2 机械男表
gia是美国宝石学院的简称，全称是gemological institute of america。 美国宝石学院 gemological institute of america 的创办人robert m. shipley于1931年在美国los angeles成立gia，初是用夜校及函授方式训练珠宝商如何评估批发价，1953年gia在new york创立了第一所实验室 laboratory，开始签发钻石鉴定报告书，而后又在加州圣塔蒙尼卡 santa monica 及la市区设立另两个 laboratory，正式名称为宝石业鉴定公司 gem trade laboratory .inc (gtl)，gtl隶属于gia专职鉴定不估价。是上早创立国际钻石4c标准的鉴定机构，秉承公正、科学、严谨的态度对所鉴定的每一颗钻石都严格按照4c标准进行分级评定，因此，具有gia鉴定证书的钻石在钻石交易中深受广大消费者信赖、推崇，是目前国际间的钻石鉴定机构。
gia的地位
隶属于gia之gtl实验室，gia diamond report上显示乃此徽章。的钻石供应商de beers也赞许gia将钻石产业与消费者间搭起良性的交易保障，当然主要原因是gia永远站在客观理性上不曾停止研究与不断培育人才。
gia的成就.
至今gia在全球已有十四个教学机构，提供专业的研究、销售、鉴定等课程，培养高素质的珠宝从业人员，也促成gia在业界有此崇高的声誉，让大?对它的信赖度与专业性始终保持领导的地位。
gia的专业
diamond grading report 是一份钻石品质分析的参考文件，并非一般所称的保单或国际保证书，今日gia分级制度与专业术语已成为国际钻石语言，许多从业人员是依据gtl的钻石分级制度为标准。diamond grading report 的真正意义为钻石品质报告书，主要的四大功能有：
1. 辨别真假
2. 特徵记录
3. 品质分析
4. 估价参考
gia is the abbreviation of the american gem college, full name is gemological institute of america. robert m. gemological, founder of the institute of the american gem institute, america. shipley was founded in 1931 in los angeles, usa, initially by training jewelers in evening schools and correspondence to assess the wholesale price, 1953 gia started the first laboratory in new york laboratory, and began issuing the diamond identification report, then in california monica the city of santa monica and la has two additional laboratory, officially named gem trade laboratory. inc (gtl), gtl is part of gia's full-time appraisal not valued. is the world's first international diamond 4c standards to establish an authoritative accreditation body, adhering to the impartial, scientific, rigorous attitude to the identification of each diamond is strictly in accordance with the 4c standard grading evaluation, therefore, with gia certification of diamonds in the world diamond trading by the vast number of consumers trust, praise, is currently the most authoritative international diamond identification agencies.
the status of gia
belonging to the gia of the gtl laboratory, gia diamond report on the display is this badge. diamond supplier de beers also praised gia to the diamond industry and consumers to set up a benign transaction security, of course, the main reason is that gia always stand in the objective reason never stop research and constantly cultivate talent.
gia's achievements.
so far, gia has 14 teaching institutions in the world, providing professional research, sales, accreditation and other courses to train high-quality jewelry practitioners,
also contributed to the gia in the industry has this lofty reputation, so that the credibility of its trust and professionalism has always maintained a leading position in the world.
gia professional
diamond grading report is a reference document for diamond quality analysis, not generally referred to as a policy or international guarantee, today's gia classification system and terminology has become the international diamond language, many practitioners are based on the gtl diamond grading system as the standard. diamond grading report's true meaning for the diamond quality report, the main four functions are:
1. distinguish between true and false
2. the special record
3. quality analysis
4. valuation reference