With a $799 price tag, Apple highlights its durable sapphire screen. While many Apple products have a sapphire crystal, how pure is the one available on the Apple Watch Ultra, and how does it ...
We cut a 428 carat lab-grown sapphire with our 60,000 PSI waterjet. It was the hardest thing we’ve ever cut! Canada Prime Minister Justin Trudeau likely to announce resignation, reports say ...
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