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Heart|Natural|GIA

1.23ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6237766192

Certificate GIA 6237766192

Diamond specifications and retailer prices

From $4,341 AUD
As of November 6, 2026
Save $4,664 AUD (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,005 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6237766192. Listed at 11 retailers as of November 4, 2026, with prices from $4,341 to $9,005, a $4,664 spread on the same certified stone. MOH London lists it at $9,005. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6237766192
Dimensions7.32 × 5.50 × 3.71 mm
L/W Ratio1.33
Culet sizeNone
Top View
7.32 mm5.50 mm1.23 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6237766192
Side View
Table 70.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

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: $9,005 AUD|Low: $4,341 AUD|High: $9,125 AUD|Avg: $5,809 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$4,341 AUD
Retailer 7$4,424 AUD
Retailer 11$4,456 AUD
Retailer 8$4,635 AUD
Retailer 12$4,909 AUD
Retailer 2$5,308 AUD
Retailer 6$5,590 AUD
Retailer 3$6,113 AUD
Retailer 5$6,284 AUD
Retailer 4$6,724 AUD
Retailer 9$7,877 AUD
MOH London$9,005 AUD

24 data points across 12 retailers

11 retailers$4,341 AUD to $9,005 AUD

B+
Cheapest Retailer
-
$4,341 AUD
B+
Retailer 2
-
$4,424 AUD
View
B+
Retailer 3
-
$4,456 AUD
View
B+
Retailer 4
-
$4,635 AUD
View
B
Retailer 5
-
$4,909 AUD
View
B
Retailer 6
-
$5,308 AUD
View
B
Retailer 7
-
$5,590 AUD
View
Retailer 8
-
$6,113 AUD
View
Price last confirmed 14 days ago
B
Retailer 9
-
$6,284 AUD
View
B
Retailer 10
-
$7,877 AUD
View
Most Expensive
B
MOH London
424A08179 · Nov 4
$9,005 AUD
£4,872 GBP
View
10 more retailers have this diamond
Prices start from $4,341 AUDSave up to $4,664 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 Heart
$4,341 AUD