1.23ct D SI1 Marquise Natural Diamond
EX • D/SI1 • GIA 6545405876
Certificate GIA 6545405876
Diamond specifications and retailer prices
About this 1.23ct natural marquise diamond
This 1.23ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545405876. Listed at 10 retailers as of November 4, 2026, with prices from $6,468 to $11,787, a $5,319 spread on the same certified stone. MOH London lists it at $11,787. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.
The 4Cs
Specifications
Caratlytics Score
How it works →10 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
- 1.23ct MarquiseD/SI1from $5,748across 9 retailersAs of November 6, 2026
- 1.23ct MarquiseD/SI1from $6,381As of November 6, 2026
- 1.22ct MarquiseD/SI1from $6,845across 12 retailersAs of November 5, 2026
- 1.24ct MarquiseD/SI1from $7,291As of November 6, 2026
- 1.21ct MarquiseD/SI1from $5,017across 26 retailersAs of November 6, 2026
- 1.21ct MarquiseD/SI1from $5,056across 19 retailersAs of November 5, 2026
- 1.21ct MarquiseD/SI1from $6,145across 15 retailersAs of November 4, 2026
- 1.21ct MarquiseD/SI1from $5,891across 15 retailersAs of November 6, 2026