There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald?

Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone.

Lab Grown 1.5x3mm to 6x12mm Zambian Emerald Marquise Gemstone Green Color for Jewelry Making

Method: Hydrothermal (Identical to natural) 水热法

Chemical Formula: Be3Al2 (SiO3) 6 (Identical to natural)

Shape: Marquise 

Type: Hand Cut

LAB CREATED SAPPHIRE COLOR CHART:

CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,We supply Lab stone,such as CVD/HPHT.LAB CREATED SAPPHIRE.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. 

Feel free to contact me if you have any questions.