Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles, you'll see a variety of tints glisten, causing you to question what color ...
Karahantepe is one of at least 20 sites dating to the Pre-Pottery Neolithic period, more than 10,000 years ago, that are being explored by archaeologists working in the Taş Tepeler, or Stone Mounds, ...
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