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Science Bowl Question

📅 NSB MS 2012🎓 MS🔄 Round 10#️⃣ Question 18🌟 BONUS✍️ Short Answer

What group of minerals has the following characteristics: 1) they can be gemstones or abrasives; 2) they are found in many colors; 3) they have a hardness of about 6.5 to 7.5; and 4) they are nesosilicates [nee-soh-SIL-i-kayts].

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