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Round|Lab Grown

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • 722504157

Diamond specifications and retailer prices

From $620 USD
£489 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: $620 USD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.23
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
Fluorescence
OriginLab Grown
Grading Lab
Certificate722504157
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
Top View
10.37 mm7.13 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
Certificate722504157
Side View
TableCrownGirdlePavilionCuletDepth

Caratlytics Score

How it works →
C
Average
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Price History

Last verified: Nov 5
Current: $620 USD|Low: $620 USD|High: $1,240 USD|Avg: $953 USD|-19.3%
Diamond Quarter
Retailer 2
February 7, 2026
Diamond Quarter$620 USD
Retailer 2$820 USD

8 data points across 2 retailers

1 retailer

C
Diamond Quarter
1.23SI1DLG49DCBDN · Nov 5
$620 USD
£489 GBP
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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.

C
1.23ct Round
$620 USD