Just because a Van Cleef & Arpels necklace starts with "ja" doesn't mean it's real. First of all, Van Cleef & Arpels is a famous jewelry brand, and its products usually have high value and unique design. However, there are also many counterfeit brands and fakes in the jewelry market. Therefore, it is not accurate to judge the authenticity of Van Cleef & Arpels necklace only by the beginning of "ja".

To judge the authenticity of Van Cleef & Arpels necklace, many factors need to be considered comprehensively. First of all, judging from the purchase channels, formal jewelry stores or official channels are reliable ways to buy real Van Cleef & Arpels products. Secondly, we can observe the craft and material of the necklace. Real Van Cleef & Arpels necklaces are usually made of high-quality materials with exquisite workmanship. In addition, you can consult Van Cleef & Arpels official website or a professional for more information and verification.

It should be noted that there are skilled imitations in the jewelry market, which may imitate the designs and logos of Van Cleef & Arpels, and it is difficult to distinguish the authenticity. Therefore, you should be cautious when buying jewelry, and try to choose reliable channels and distributors. In addition, understanding Van Cleef & Arpels' brand history, features and authentic logo will also help to identify the authenticity.

In a word, the authenticity of Van Cleef & Arpels necklace can't be judged only by the beginning of "ja", and many factors need to be considered comprehensively and corresponding verification measures should be taken.