Opals are formed when what

Write the following sentence as a proportion.12 diamonds is to 9 opals as 4 diamonds is to 3 opals. Choose the correct answer
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Opals come in a variety of colors, and they range from opals to transparent. The most desirable opus are known as the precious
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Opals come in a variety of colors, and they range from opaque to transparent. The most desirable opals are known as the precious
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question.Opals come in a variety of colors, and they range from opaque to transparent. The most
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Use the excerpt to answer the question. Opals come in a variety of colors, and they range from opaque to transparent. The most
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