【Intuitive Design】Yhkj Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED lights will light up as the stone passes each ...

Put the Texas A&M Aggies into a diamond tester, and who knows what'll happen. Depending on what aspect you look at, the results will widely vary. 4-0 in the SEC and six straight victories?

The challenge for the readers is to spot the hidden diamond in 7 seconds. Can you find it within the time limit? Your time starts now! This brain teaser will test your attentiveness and intelligence.

The Cape Town Diamond Museum specifies that “if it stays fogged for three to four seconds chances are that you’re looking at ...