CaratHunter
Plans
Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6552995220

Certificate GIA 6552995220

Diamond specifications and retailer prices

From $6,941 AUD
As of November 6, 2026
Save $4,173 AUD (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,114 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552995220. Listed at 8 retailers as of November 4, 2026, with prices from $6,941 to $11,114, a $4,173 spread on the same certified stone. MOH London lists it at $11,114. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552995220
Dimensions6.78 × 6.83 × 4.29 mm
L/W Ratio1.01
Top View
6.78 mm6.83 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552995220
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,114 AUD|Low: $3,913 AUD|High: $11,203 AUD|Avg: $6,501 AUD|+20.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$3,913 AUD
Retailer 7$5,503 AUD
Retailer 8$5,807 AUD
Retailer 3$6,941 AUD
Retailer 5$7,384 AUD
Retailer 2$7,617 AUD
Retailer 4$8,745 AUD
MOH London$11,114 AUD

29 data points across 8 retailers

8 retailers$6,941 AUD to $11,114 AUD

Retailer 1
-
$3,913 AUD
Price last confirmed 29 days ago
Retailer 2
-
$5,503 AUD
View
Price last confirmed 30 days ago
Retailer 3
-
$5,807 AUD
View
Price last confirmed 33 days ago
B
Retailer 4
-
$6,941 AUD
View
B+
Retailer 5
-
$7,384 AUD
View
B+
Retailer 6
-
$7,617 AUD
View
B
Retailer 7
-
$8,745 AUD
View
Most Expensive
B
MOH London
B60E4151F · Nov 4
$11,114 AUD
£6,126 GBP
View
7 more retailers have this diamond
Prices start from $6,941 AUDSave up to $4,173 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.

B+
1.23ct Round
$6,941 AUD