How these Lab grown gemstones are made?

Most of them are created with the methods byPulled Czochralski , TheCzochralski process, uses radio waves to melt the aluminum oxide. A rod tipped with a seed crystal is inserted into the mixture and slowly rotated and pulled out, creating a column of Colored stones.

Cornflower Blue Sapphire Lab Created Round Cut Loose Gemstones Wholesale Price for Jewelry Making

Lab Created Stone color chart:

More shapes are availableble:

CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact  us if you have any questions.