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 Blue Spinel
Shape
Asscher cut
Size / weight
5×5mm – 12×12mm
Cut
Excellent
Color
Blue
Clarity
VVS
Certificate
AGL/GRC
Growth method (lab)
Czochralski method
Factory / supplier
4 Wuzhou gem processing enterprises
Chemical
MgAl2O4
Hardness
8.2
Refractive index
1.694
Specific gravity
3.58-3.61
Customization
Custom cuts available
For wholesale quotes, share quantity, size range, color/clarity, lead time, and destination.
This lab-grown cobalt blue spinel features a precise Asscher cut, showcasing its vivid color and exceptional clarity. Available in a range of sizes from 5x5mm to 12x12mm, each stone boasts VVS clarity and an excellent cut. It shares the identical chemical composition (MgAl2O4) and optical properties, including a refractive index of 1.694, with natural spinel. Custom cuts are available upon request. The material is produced by leading Wuzhou gem processing enterprises using the Czochralski growth method.