2. **How do lesser-known precious stones, such as spinel, alexandrite, or tanzanite, compare in terms of hardness, brilliance, and value to more popular gemstones like diamonds, rubies, and sapphires?

2. **How do lesser-known precious stones, such as spinel, alexandrite, or tanzanite, compare in terms of hardness, brilliance, and value to more popular gemstones like diamonds, rubies, and sapphires?
Admin 20 hours, 49 minutes ago in Jewelry & Precious Stones - Other
0 Answer(s)
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