All Diamonds

Natural Diamond (Radiant Cut)

Likely Natural (Radiant-cut (Square Radiant with cut corners))

Natural Diamond (likely) (Radiant Cut)

Natural (Simulant suspect) (Square Radiant / Modified Cushion)

Diamond Simulant (Likely Cubic Zirconia or Moissanite) (Radiant Cut (Square Modified Brilliant))

Natural Diamond (Round Brilliant (viewed in profile))

Natural Diamond (Probable, based on facet wear and inclusions) (Radiant Cut (Square Modified Brilliant))

Likely Synthetic/Simulant (Moissanite) (Radiant Cut)

Likely Natural Diamond or High-Quality Simulant (Visual indicators suggest potential Natural Diamond based on inclusion ...

Natural (Salt and Pepper Diamond) (Cushion Cut)

Synthetic Stimulant (Likely Cubic Zirconia) (Radiant Cut)

Moissanite (Princess/Radiant Hybrid)

Natural Diamond or Cubic Zirconia (CZ) Simulant (Radiant Cut (Rectangular Modified Brilliant))

Likely Natural White Diamond (Round Brilliant Cut)

Possible Simulated/Moissanite (Radiant Cut)

Synthetic Stimulant (likely Glass or Cubic Zirconia) (Modified Radiant / Octagonal)

Likely Natural Diamond (Radiant Cut)

Likely Cubic Zirconia or Simulated Diamond (Radiant Cut (Square Modified Brilliant))

Natural Diamond (Likely Type Ia) (Cushion Modified Brilliant)

Likely Simulated (Cubic Zirconia/Moissanite) (Cushion Brilliant)

Likely Cubic Zirconia or Moissanite (Radiant Cut)

Likely Diamond Simulant (e.g., Cubic Zirconia or Moissanite) (Emerald or Radiant Cut (Rectangular Step/Mixed))

Likely Moissanite or Cubic Zirconia (CZ) (Radiant Cut)

None (Subject is a pearl bracelet) (Round (Spherical beads))

Black Spinel or Onyx (Likely non-diamond simulant) (Square Cushion Checkerboard Cut)

Natural Diamonds (Round Brilliant)

Probable Simulant (Cubic Zirconia or glass) (Round Brilliant)

Natural or Lab-Grown (likely used in jewelry sets) (Round Brilliant)

Simulant (Likely Cubic Zirconia) (Princess Cut)

Natural (Likely Carbon Diamond) (Round Brilliant)

Natural Diamond or White Topaz/Zircon Simulant (Round Brilliant)

Natural Diamond (Likely) (Round Brilliant)

Likely Natural Diamond (Round Brilliant)

Blue Sapphires (Non-diamond) (Round Brilliant)

Likely Natural or Lab-Grown Diamond (Round Brilliant)

Natural or Lab-Grown Diamond (Oval)

Natural Diamond (Round Brilliant)

Gemstone (Likely Aquamarine or Blue Topaz) (Emerald Cut)

Likely Moissanite or High-Quality Cubic Zirconia (Emerald Cut or Radiant Cut)

Indeterminate based on image (Potential small accents likely natural or lab-grown) (Round (Melee accents))

Gemstone (Likely Blue Topaz or Aquamarine, not a Diamond) (Emerald Cut)

Likely Natural Sapphire (Non-Diamond) (Round Brilliant)