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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 $374 AUD
As of November 4, 2026
Save $1,284 AUD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,658 AUD 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 $374 to $1,658, a $1,284 spread on the same certified stone. MOH London lists it at $1,658. 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
Colour
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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,658 AUD|Low: $374 AUD|High: $1,707 AUD|Avg: $839 AUD|-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$374 AUD
Retailer 13$457 AUD
Retailer 6$664 AUD
Retailer 11$693 AUD
Retailer 7$694 AUD
Retailer 9$701 AUD
Retailer 3$721 AUD
Retailer 5$761 AUD
Retailer 2$814 AUD
Retailer 12$833 AUD
Retailer 10$1,100 AUD
Retailer 4$1,114 AUD
MOH London$1,658 AUD

43 data points across 13 retailers

17 retailers$374 AUD to $1,658 AUD

Retailer 1
-
$337 AUD
Price last confirmed 27 days ago
A
Retailer 2
-
$374 AUD
View
Final sale: no returns
Retailer 3
-
$391 AUD
View
Price last confirmed 24 days ago
Retailer 4
-
$419 AUD
View
Price last confirmed 35 days ago
A
Retailer 5
-
$457 AUD
View
B+
Retailer 6
-
$664 AUD
View
B+
Retailer 7
-
$693 AUD
View
B+
Retailer 8
-
$694 AUD
View
B+
Retailer 9
-
$701 AUD
View
Retailer 10
-
$721 AUD
View
Price last confirmed 16 days ago
Retailer 11
-
$761 AUD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$814 AUD
View
B+
Retailer 13
-
$833 AUD
View
B
Retailer 14
-
$1,100 AUD
View
Retailer 15
-
$1,114 AUD
View
Price last confirmed 27 days ago
Retailer 16
-
$1,344 AUD
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
6452332073 · Nov 5
$1,658 AUD
£914 GBP
View
16 more retailers have this diamond
Prices start from $374 AUDSave up to $1,284 AUD

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
$374 AUD