Gem Map Knowledge

Lab-Grown vs. Natural Diamonds: Pricing, Certification, and Value Retention

August 3, 20261 min read

Both lab-grown and natural diamonds are chemically, physically, and optically identical. They share the exact same crystal structure (pure carbon), measure a maximum 10 on the Mohs scale of hardness, and emit identical fire and brilliance. However, their differences lie in their origin, pricing, certification standards, and long-term market value. 1. Physical & Chemical ComparisonNatural Diamonds: Formed billions of years ago deep within the Earth's mantle under intense heat and pressure, then brought to the surface via ancient volcanic activity. Lab-Grown Diamonds: Created in high-tech laboratories over weeks or months using advanced technological processes like Chemical Vapor Deposition (CVD) or High Pressure High Temperature (HPHT).

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Ruby

What is Ruby? https://en.wikipedia.org/wiki/Ruby

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How to Measure Your Ring Size Accurately at Home

To avoid return shipping and resizing delays, follow these steps to determine your exact ring size before placing an order.Method: The Paper & Ruler TestCut a Strip: Cut a thin strip of paper (~10 cm long and 0.5 cm wide).Wrap it Round Your Finger: Wrap the paper tightly around the base of the finger you plan to wear the ring on. Tip: Make sure to account for your knuckle width so the ring slides over easily.Mark the Joint: Use a pen to mark where the paper overlaps.Measure in Millimeters: Lay the paper flat and measure the distance from the end to the mark using a ruler in millimeters (mm).Convert Using Our Chart:51.8 mm $\rightarrow$ US Size 6 (UK Size L)54.4 mm $\rightarrow$ US Size 7 (UK Size N)57.0 mm $\rightarrow$ US Size 8 (UK Size P)59.5 mm $\rightarrow$ US Size 9 (UK Size R)Pro Tip: Measure your finger at the end of the day when your hands are warm. Cold fingers can measure up to half a size smaller.