All Diamonds

Industrial glass or slag (not a diamond) (Rough/Amorphous fragment)

Simulated or Synthetic (Likely Cubic Zirconia) (Radiant Cut)

Non-diamond/Likely Glass Cullet or Slag (Amorphous/Rough Fragment)

Non-diamond mineral (Likely Lapis Lazuli, Azurite, or Blue Slag glass) (Rough / Uncut)

Non-diamond / Likely Glass or Quartz (Rough / Irregular Fragment)

Non-diamond (Glass or Ice shard) (Irregular / Rough Shard)

Non-Gemstone (Likely Glass or Quartz) (Rough / Uncut fragment)

Probable Rough Quartz or Slag Glass (Not a Diamond) (Rough / Uncut Elongated Shard)

Natural Rough Crystal (Likely Quartz or Glass) (Rough/Uncut)

Likely Simulant (Cubic Zirconia or Yellow Quartz/Citrine) (Radiant cut center stone with pear-shaped side accents)

Probable Non-Diamond (likely Industrial Glass, Slag, or Synthetic Quartz) (Rough / Uncut / Amorphous fragment)

Natural Rough Crystal (Likely Quartz or Topaz, limited visual evidence of Diamond) (Rough/Uncut)

Natural Diamond (Rough) (Rough / Uncut (Natural Octahedral Fragment))

Moissanite (Oval Brilliant)

Natural Raw Diamond Crystal / Industrial Grade Diamond Rough (Uncut / Rough (Natural octahedral distortion or macle frag...

Moissanite (Simulant) (Oval Brilliant)

Natural Diamond (Raw/Rough) (Rough/Uncut)

Non-Diamond / Impurity Mineral (Likely Lapis Lazuli or Azurite based on color and texture) (Rough / Uncut)

Non-Diamond / Likely Glass or Quartz (Rough / Uncut (Irregular))

Likely Non-Diamond (Mineral Specimen) (Rough / Uncut (Natural Crystal))

Indeterminate (Likely Quartz or Glass) (Rough / Uncut fragment)

Non-diamond/Mineral Specimen (Likely Azurite or Lapis Lazuli in Matrix) (Rough/Uncut (Natural crystal form))

Natural Rough Diamond (Rough/Uncut Macle (Triangular/Flattened))

Indeterminate (Likely non-diamond silicate mineral like Quartz or a rough glass fragment) (Rough / Uncut (Irregular shar...

Natural Rough Crystal (Potential Macle or Cleavage Fragment) (Uncut / Rough (Irregular crystalline form))

Natural Rough Crystal (Mineral Specimen) (Natural Elongated Hexagonal/Prismatic (Uncut))

Natural (Rough) (Rough / Uncut (showing trigons and growth steps))

Non-diamond (Glass fragment) (Irregular/Rough fragment)

Natural (Rough / Uncut (Glassy/Crystalline))

Likely Non-Diamond (Mineral Specimen) (Rough Crystal (Uncut))

Indeterminate Transparent Mineral (Likely Quartz or Glass) (Rough / Uncut (Amorphous))

Natural Raw Specimen (Likely Linarite or Azurite, not a Diamond) (Rough / Uncut / Natural Crystal Habit)

Natural Rough Diamond (Rough Octahedral/Dodecahedral Fragment)

Natural (likely melee/composite cluster) (Oval (Composite Shape) / Round Brilliant (Individual Stones))

Natural Rough Diamond (Rough Octahedral/Irregular Fragment)

The specimen in the image is not a diamond; it appears to be a natural mineral specimen, likely Linarite or Azurite embe...

Likely Non-Diamond (Potential Synthetic or Glass) (Rough / Irregular Uncut)

Natural Diamond Composite (Oval Halo (Composite Centre))

Natural Diamonds (Cluster Setting) (Round Brilliant (Individual stones arranged in an Oval cluster shape))

Natural Diamonds (Cluster/Composite) (Oval Composite (Multi-stone Cluster))

Natural Rough Diamond (Rough / Uncut (Natural Macle/Octahedral fragment))

The specimen is not a diamond; it is likely a blue glass slag or a cobalt-rich mineral specimen like cobaltocalcite or a...