1.50ct H SI1 Cushion Lab Grown Diamond
GD • H/SI1 • GIA 6155562855
Certificate GIA 6155562855
Diamond specifications and retailer prices
About this 1.5ct lab-grown cushion diamond
This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6155562855. Listed at 3 retailers as of October 30, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.
The 4Cs
Specifications
Caratlytics Score
How it works →3 retailers
Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.
Similar diamonds
- 1.5ct CushionH/SI1from $625across 4 retailersAs of October 30, 2026
- 1.5ct CushionH/SI1from $779As of October 30, 2026
- 1.51ct CushionH/SI1from $381across 11 retailersAs of October 30, 2026
- 1.51ct CushionH/SI1from $429across 9 retailersAs of October 30, 2026
- 1.4ct CushionH/SI1from $699As of October 29, 2026
- 1.62ct CushionH/SI1from $8,408across 3 retailersAs of October 26, 2026
- 1.66ct CushionH/SI1from $3,382As of October 30, 2026
- 1.71ct CushionH/SI1from $534across 10 retailersAs of October 30, 2026