Gemstone's Hardness

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Knowledge Center

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• Birthstones
• Anniversary Stones
• Gemstone's Hardness
• Gemstone Types of Treatment
• Gemstone's Cutting & Shapes
• Gemstone's Clarity
• US Ring Sizing Chart: To Scale Printable Chart
• Precious Vs. Semi-Precious Gemstones
• Garnet ( January Birthstone )
• Amethyst ( February Birthstone)
• Aquamarine ( March Birthstone)
• Diamond( April Birthstone )
• Emerald ( May Birthstone)
• Alexandrite/Moonstone/Pearl( June Birthstone)
• Ruby(July Birthstone)
• Peridot, Spinel and Sardonyx ( August Birthstones)
• Opal and Tourmaline(October Birthstones)
• Sapphire(September Birthstone)
• Topaz and Citrine (November Birthstones)
• Tanzanite, Turquoise, Zircon, and Blue topaz(December Birthstones)
• Frequently Asked Questions