The anniversary of the Ashoka cut and publication of a new book are causes for celebration at William Goldberg Diamonds.

Since the 1940s, when the Gemological Institute of America (G.I.A.) introduced the 4C’s (color, clarity, cut and carat) as ...

Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

Your first diamond purchase is a moment you never forget. Whether it’s a pair of diamond earrings or an engagement ring, these jewelry pieces are designed to last and often mark a special occasion.

Technology startup Refraction has received $250,000 in funding from Launch NY as part of its ongoing pre-seed round. The funding will help Refraction scale into the used car dealership market this ...

PURPOSE: To compare the sensitivity and specificity of a widespread method of screening for refractive errors in Singapore schoolchildren using a simplified acuity screening chart with a more ...

The government of Botswana and South African diamond firm De Beers say they have reached a new, 10-year sales agreement following talks that had dragged on since 2019. Analysts say the diamond ...

With its latest jump from No. 4 to 1, “GNX” marks the set’s second week atop the chart following its release in November. Additionally, two of Lamar’s other albums — 2017’s “Damn ...

De Beers said there were signs of a pick up in US diamond demand before Christmas, while India has overtaken China to become the second-biggest market. The industry has been hammered by a collapse ...

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