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1999
- April
Founded in Chuo Ward, Tokyo
- July
I-PRIMO Ginza flagship store opens as the brand's first store
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2003
- June
Lazare Diamond Boutique Ginza flagship store opens as the brand's first store.
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2007
- May
Primo Diamond Taiwan Inc. is established with the aim of expanding business in Taiwan.
- October
I-PRIMO Zhongxiao flagship store opens as the first store in Taiwan
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2011
- September
Primo Diamond Hong Kong Ltd. was established with the aim of expanding business in Hong Kong.
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2012
- October
I-PRIMO Causeway Bay Flagship Store opens as the first store in Hong Kong.
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2015
- November
Primo Diamond Shanghai Trading Co., Ltd. was established with the aim of expanding business in mainland China.
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2016
- July
I-PRIMO Hong Kong Plaza store opens as the first store in mainland China.
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2017
- July
Reached 100 stores globally
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2019
- April
Established Kuno Primo Co., Ltd. through joint investment with K Uno Co., Ltd.
- August
Kuno Primo Co., Ltd. opens the Kay Uno Taipei Zhongxiao flagship store as the first store in Taiwan.
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2020
- December
PJ Holdings Co., Ltd., a holding company for Primo Japan Inc. is established.
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2021
- April
PJ Holdings Co., Ltd. changed its name to Primo Global Holdings Co., Ltd.
- May
I-PRIMO Yonago Shinmachi Tenmaya store opens, expanding sales area to all 47 prefectures nationwide
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2022
- January
Primo Diamond Singapore Pte. Ltd. was established with the aim of expanding business in Singapore.
- November
I-PRIMO ION Orchard Store opens as the first store in Singapore
Concluded a business partnership agreement with Star Jewelry Boutiques Co., Ltd. regarding overseas expansion.
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2023
- May
STAR JEWELRY Shanghai Grand Gateway 66 Store opens as the first STAR JEWELRY store in mainland China.
- September
STAR JEWELRY Shin Kong Mitsukoshi Xinyi Place A8 Store opened as the first STAR JEWELRY store in Taiwan.
- October
Acquired the trademark and exclusive sales rights for "LAZARE DIAMOND" in Japan from Lazard Kaplan International Inc. and its Japanese branch Lazard Kaplan Japan Inc.