All Diamonds

Natural Diamond (Round Brilliant)

Probable Simulant (Cubic Zirconia or White Topaz) (Round Brilliant)

Natural (Likely costume jewelry accents) (Round Brilliant)

Natural (Likely a Accent Diamond or Substitute) (Round Brilliant)

Natural Melee Diamonds (Round Single Cut or Round Brilliant)

Likely Natural Melee (Single Cut or Rose Cut) (Round (Antique Single Cut))

Likely Cubic Zirconia or alternative stimulant (Round Brilliant)

Natural Diamonds (Round Brilliant)

Likely Non-Diamond (Simulant such as Cubic Zirconia or Quartz/Glass) (Round Rose Cut or Flat-Topped Round Cut)

Likely Diamond (Natural or Lab-Grown) or Moissanite (Round Brilliant)

Moissanite (Simulant) (Round Brilliant)

Natural (Likely Carbonado or heavily included Fancy Black) (Pear shape with modified faceting)

Natural (Round Brilliant)

Natura`l Diamond (Round Brilliant)

Synthetic/Simulant (Non-Diamond) (Oval Brilliant)

Likely Lab-Grown or Synthetic Simulant (Round Brilliant)

Natural Diamond (Round Brilliant)

Natural (based on user description) (Round Brilliant)

Natural Fancy Color Diamond (Cushion Modified Brilliant)

Moissanite (Potential) (Round Brilliant)

Likely Natural Diamond (based on luster and setting type) (Round Brilliant)

Likely Costume Jewelry (Cubic Zirconia or Crystal) (Round Brilliant)

Indeterminate (Possible Diamond or High-quality Simulant) (Round Brilliant)

Likely Simulated (Cubic Zirconia or Crystal) (Round Brilliant)

Potential Diamond Simulant (e.g., Cubic Zirconia or Moissanite) (Round Brilliant)

Indeterminate (Visual only) (Round Brilliant)

Indeterminate (Likely Diamond or Simulated Diamond) (Round Brilliant)

Natural or Lab-Grown Diamond (Tentative) (Round Brilliant)

Cubic Zirconia or Simulated Gemstone (Round Brilliant)

Natural Diamond (Likely) (Round Brilliant)

Indeterminate (Likely Simulant or Small Natural Diamond) (Round Brilliant)

Probable Cubic Zirconia or Costume Crystal (Round Brilliant)

Simulated (Likely Cubic Zirconia or Glass) (Round Modified Brilliant)

Likely Cubic Zirconia (CZ) or glass stimulant (Round Brilliant)

Simulant (Likely Glass or Cubic Zirconia) (Round Brilliant)

Likely Costume Jewelry / Rhinestone (Non-Diamond) (Round Modified Brilliant)

Simulant (Likely Cubic Zirconia or Glass) (Round Brilliant)

Natural (Likely a rustic or portrait-cut salt and pepper diamond) (Round Rose Cut or Disc-like Flat Cut)

Indeterminate (Visual characteristics suggest probable Simulant like Cubic Zirconia or Glass) (Round Brilliant)

Moissanite or Cubic Zirconia (Suspected) (Round Brilliant)

Potential Diamond Simulant (Cubic Zirconia or Moissanite) or Lab-Grown Diamond (Round Brilliant)

Non-diamond (Gemstone) (Oval Cabochon)