jewelry

The Best Diamond Jewelry $200 or Less

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Please note: Prices and deals are accurate at time of publication, but are subject to change.

This year’s Amazon Prime Day event is perfectly timed for anyone who wants to get their holiday shopping done early. You truly don’t want to miss out on these Black Friday-level deals, which is why we’re shopping for jewelry that will impress even the pickiest of shoppers!

Diamonds are the cream of the crop when it comes to jewelry, and we found amazing pieces that are all on sale for $200 or less — seriously! These deals are only going to be around until tomorrow, so we’re shining the spotlight on nine of our favorite picks for you to shop now. Read on for more, and get ready to frost yourself!

1. These Classic Round Studs —

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Normally an insulator, diamond becomes a metallic conductor when subjected to large strain in a new theoretical model

diamond
Credit: CC0 Public Domain

Long known as the hardest of all natural materials, diamonds are also exceptional thermal conductors and electrical insulators. Now, researchers have discovered a way to tweak tiny needles of diamond in a controlled way to transform their electronic properties, dialing them from insulating, through semiconducting, all the way to highly conductive, or metallic. This can be induced dynamically and reversed at will, with no degradation of the diamond material.


The research, though still at an early proof-of-concept stage, may open up a wide array of potential applications, including new kinds of broadband solar cells, highly efficient LEDs and power electronics, and new optical devices or quantum sensors, the researchers say.

Their findings, which are based on simulations, calculations, and previous experimental results, are reported this week in the Proceedings of the National Academy of Sciences. The paper is by MIT Professor Ju Li and graduate

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