BUYJEM • Factory Direct
Product details
For wholesale: specs extracted from product content and saved fields.
Ship from / originWuzhou Gemstone City
Category
Lab-grown Spinel / Loose Gemstones
Gem type
Lab-Grown Cobalt Spinel
Shape
Round
Size / weight
1.00mm – 12.00mm
Cut
Excellent
Color
Blue
Clarity
VVS
Certificate
AGL/GRC
Growth method (lab)
Czochralski method
Factory / supplier
3 Wuzhou gem processing enterprises
Chemical
MgAl2O4
Hardness
8.2
Refractive index
1.694
Specific gravity
3.58-3.61
Customization
Custom cuts available
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This round-cut lab-grown cobalt blue spinel offers a vibrant blue color with VVS clarity and an excellent cut. Available in a versatile size range from 1.00mm to 12.00mm, it is ideal for various jewelry applications. The gemstone shares the identical chemical, physical, and optical properties of natural cobalt spinel, including a hardness of 8.2 and a refractive index of 1.694. Custom cuts are available upon request. Produced using the Czochralski method.