The Big 3: Ruby, Sapphire, & Emerald
When it comes to grading colored gemstones, some forms of jewelry are more precious than others. The Big 3: Ruby, Sapphire, and Emerald have been treasured for decades and continue to be admired. These favorites are the only gemstones referred to as precious gems; all others are called semi-precious. Ruby, Sapphire, and Emerald remain the […]
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