Likely Cubic Zirconia (CZ) or glass stimulant
Likely Cubic Zirconia (CZ) or glass stimulant · Round Brilliant
Poor (Commercial grade) Cut

Carat
Estimated 0.15 - 0.25 cts (4mm diameter)
Color
Likely D-E equivalent (Colorless)
Clarity
Indistinguishable (Likely VS or better appearance)
Shape
Round Brilliant
Overall Assessment
This appears to be a common costume jewelry earring, likely featuring a cubic zirconia or glass stone rather than a natural diamond. The setting style and material appearance are indicative of low-cost fashion accessories.
Cut Quality
Poor (Commercial grade)
Brilliance
Low due to poor lighting and likely material type
Fire
Low visible dispersion
Scintillation
Minimal under current ambient lighting
Proportions
Standard commercial cut used for inexpensive costume jewelry
Symmetry
Good
Polish
Fair
Fluorescence
None
Inclusions
None visible at this resolution
Blemishes
Possible surface scratches or abrasions typical of low-hardness stimulants
Origin
Mass-produced synthetic (likely mainland China)
Treatment Detection
None applicable to stimulants
Estimated Value
$1 - $10 USD (Retail replacement value for costume stud)
Certification Estimate
Ineligible for major lab grading (GIA/AGS)
Investment Potential
None
Similar Diamonds
Mall-grade cubic zirconia studs or crystal earrings
Setting Suggestions
Stainless steel or base metal bezel earring stud
Care & Maintenance
Wipe with a damp cloth; avoid harsh chemicals which may strip the plating from the setting
Interesting Facts
Most 'diamond' earrings found in this specific style of bezel stud setting are constructed from stainless steel and cubic zirconia for durability in costume jewelry.