Emerald Cut Shared Prong band
Asscher
Emerald
Princess
When Ordered by
Today
Estimated Ship
Date:
19 Oct
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Hassle-free 30 days return
Lifetime Warranty
Crafted to last forever.
Certified Quality
Certified by IGI.
Description
Shipping and Returns
Lab-Grown vs Natural Diamonds
Lab-grown and Natural diamonds are both real diamonds: pure carbon in the same cubic crystal structure. They share the same brilliance, fire and hardness. The differences are how they form and what's inside the stone at a microscopic level.
| Lab-grown | Natural | |
|---|---|---|
| Identical in both | ||
| Composition | Pure carbon (C) | Pure carbon (C) |
| Crystal structure | Cubic | Cubic |
| Brilliance (refractive index) | 2.42 | 2.42 |
| Fire (dispersion) | 0.044 | 0.044 |
| Luster (reflectivity) | 17.2% | 17.2% |
| Hardness | 10 Mohs | 10 Mohs |
| Where they differ | ||
| Origin | Grown in a lab (CVD or HPHT) | Mined from the earth |
| Time to form | 2–4 weeks | 1–3.5 billion years |
| Diamond type | Mostly Type IIa (nitrogen-free) | About 98% Type Ia (nitrogen present) |
| Typical inclusions | Metallic flux or graphite specks | Feathers, mineral crystals, clouds |
| Certification | IGI, GIA (report says lab-grown) | GIA, IGI |