Round|Lab Grown|GIA

1.23ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6452332073

Certificate GIA 6452332073

Diamond specifications and retailer prices

From $262 USD
As of November 4, 2026
Save $899 USD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,161 USD at MOH London · As of November 5, 2026
View at MOH London

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 and certified by GIA 6452332073. Listed at 17 retailers as of November 4, 2026, with prices from $262 to $1,161, a $899 spread on the same certified stone. MOH London lists it at $1,161. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6452332073
Dimensions6.89 × 6.85 × 4.25 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.89 mm6.85 mm1.23 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452332073
Side View
Table 55.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $1,161 USD|Low: $262 USD|High: $1,195 USD|Avg: $586 USD|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8$262 USD
Retailer 13$320 USD
Retailer 2$465 USD
Retailer 11$485 USD
Retailer 6$486 USD
Retailer 9$491 USD
Retailer 3$505 USD
Retailer 5$533 USD
Retailer 7$570 USD
Retailer 12$583 USD
Retailer 10$770 USD
Retailer 4$780 USD
MOH London$1,161 USD

44 data points across 13 retailers

17 retailers$262 USD to $1,161 USD

Retailer 1
-
$236 USD
Price last confirmed 27 days ago
A
Retailer 2
-
$262 USD
View
Final sale: no returns
Retailer 3
-
$274 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$293 USD
View
Price last confirmed 35 days ago
A
Retailer 5
-
$320 USD
View
B+
Retailer 6
-
$465 USD
View
B+
Retailer 7
-
$485 USD
View
B+
Retailer 8
-
$486 USD
View
B+
Retailer 9
-
$491 USD
View
Retailer 10
-
$505 USD
View
Price last confirmed 16 days ago
Retailer 11
-
$533 USD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$570 USD
View
B+
Retailer 13
-
$583 USD
View
B
Retailer 14
-
$770 USD
View
Retailer 15
-
$780 USD
View
Price last confirmed 27 days ago
Retailer 16
-
$941 USD
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
6452332073 · Nov 5
$1,161 USD
£914 GBP
View
16 more retailers have this diamond
Prices start from $262 USDSave up to $899 USD

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.

A
1.23ct Round
$262 USD