All Diamonds

Natural Diamond (Composite/Cluster Center) (Oval (Composite Center with Round Halo))

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

Natural Diamonds (Composite/Cluster) (Oval Cluster with Halo)

Natural Diamonds (Composite/Cluster) (Oval Cluster (composed of multiple Round Brilliant cuts))

Natural Diamond (Composite Cluster) (Oval-shaped halo with Round Brilliant-cut stones)

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

Natural (Likely Quartz or Glass Simulant based on visual fracture) (Indeterminate Rough / Organic Carved)

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

Indeterminate Rough Mineral (likely low-grade or non-diamond material) (Rough / Uncut / Irregular)

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

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

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

Likely Non-Diamond (Glass or Slag) (Irregular/Rough Shard)

Natural Rough Diamond (Uncut Rough / Maccle)

Indeterminable (Non-diamond glass or crystal appearance) (Irregular / Raw facets (Unable to determine standardized shape...

Likely Quartz or Cubic Zirconia (Simulant) (Indeterminate/Rough Cut Irregular)

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

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

Natural (Rough / Uncut (Glassy/Crystalline))

Indeterminate - Likely Industrial or Non-Diamond Mineral (Rough / Uncut)

Natural Rough Diamond (Rough Octahedral/Irregular Fragment)

Rough / Raw Natural Diamond (possible Industrial Grade) (Rough Uncut / Irregular)

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

Natural Rough Diamond (Rough Octahedral/Dodecahedral Fragment)

Indeterminate / Potential Rough Mineral (Likely Glass or Quartz) (Rough / Irregular Shard)

Non-diamond (Glass/Slag/Quartz) (Rough / Uncut / Amorphous)

Glass Simulant (likely broken glass or slag) (Irregular / Raw Fragment)

Non-diamond (Glass/Slag) (Rough/Amorphous)

Natural Diamond (Rough) (Rough / Uncut)

Simulant / Glass (Rough / Fragmented)

Indeterminate - Likely non-gemstone material (Glass, Slag, or Quatz) (Rough / Uncut (Amorphous shard))

Non-diamond (Glass or Slag) (Rough/Amorphous)

The sample appears to be Quartz or Glass rather than a diamond based on the conchoidal fracture patterns and lack of ada...

Natural Rough Crystal / Glassy Fragment (Rough / Uncut)

Likely Non-Diamond (Glass or Quartz) (Rough/Broken Shard)

Likely Non-Diamond (Commonly Glass or Quartz) (Rough / Irregular (Broken Fragment))

Likely Non-Diamond (Glass or Slag) (Rough / Irregular / Amorphous)

Synthetic Slag / Industrial Glass (Not a Diamond) (Irregular / Rough Shard or Fragment)

Non-diamond (Glass) (Uncut / Irregular Shard)

Non-Diamond (Man-made Glass/Cullet) (Rough Fragment with Pressed Pattern)

Indeterminate / Simulant Suspect (Irregular Slice / Rough Fragment)

Non-diamond (Likely Glass/Slag) (Irregular/Rough)