GIA美国宝石研究院成立于 1931 年，是全球权威的钻石、彩色宝石和珍珠研究机构。 GIA 是一个非营利的公益性机构，是宝石与珠宝知识、标准和教育的主要来源。 欢迎关注 GIA。 全球各地的学生来到 GIA 寻求知识、学习技能、获取证书，以求建立成功的宝石和珠宝 ...

Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading ...

Gia, the eldest daughter of Teresa Giudice, posted a photo of her and her boyfriend’s morning date, complete with several mouthwatering dishes. The fare included breakfast staples like chocolate ...

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The Kremlin on Tuesday confirmed Russian President Vladimir Putin will hold a phone call with US President Donald Trump ...

Volatility is the degree of variation of a trading price over time. In other words, volatility indicates the amount of uncertainty about the size of changes in an asset's value. The higher an ...

The patio of the storied Polo Lounge at the Beverly Hills Hotel was packed to the ...

A ‘festival of Righties’ saw the likes of Farage and Jordan Peterson set out their vision for a new conservatism ...

How many planes crash a year? Air accident records show that 2024 was the deadliest year for air disasters since 2018. There were 16 fatal accidents resulting in the deaths of 333 passengers and ...

Bitcoin mining involves solving complex mathematical puzzles, validating transactions and securing the network. Miners compete to find the correct hash, adding new blocks to the blockchain and ...