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Heart|Natural|GIA

1.23ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 1232913295

Certificate GIA 1232913295

Diamond specifications and retailer prices

From $3,114 SGD
As of November 1, 2026
Save $3,851 SGD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,187 SGD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232913295. Listed at 16 retailers as of November 1, 2026, with a 124% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232913295
Dimensions6.43 × 7.34 × 4.39 mm
L/W Ratio1.14
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
6.43 mm7.34 mm1.23 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232913295
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.9%

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 1
Current: $7,187 SGD|Low: $3,114 SGD|High: $7,187 SGD|Avg: $4,367 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 13$3,114 SGD
Retailer 9$3,204 SGD
Retailer 15$3,235 SGD
Retailer 16$3,737 SGD
Retailer 8$3,868 SGD
Retailer 14$3,881 SGD
Retailer 3$3,960 SGD
Retailer 2$4,041 SGD
Retailer 4$4,073 SGD
Retailer 6$4,293 SGD
Retailer 7$4,293 SGD
Retailer 17$4,313 SGD
Retailer 5$4,434 SGD
Retailer 10$4,848 SGD
Retailer 11$5,084 SGD
Retailer 12$6,965 SGD
NZ Jewellers$7,187 SGD

31 data points across 17 retailers

16 retailers$3,114 SGD to $6,965 SGD

A
Cheapest Retailer
-
$3,114 SGD
B+
Retailer 2
-
$3,235 SGD
View
Retailer 3
-
$3,737 SGD
View
Price last confirmed 16 days ago
Retailer 4
-
$3,881 SGD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$3,960 SGD
View
B+
Retailer 6
-
$4,041 SGD
View
B+
Retailer 7
-
$4,073 SGD
View
B+
Retailer 8
-
$4,293 SGD
View
B+
Retailer 9
-
$4,293 SGD
View
Retailer 10
-
$4,313 SGD
View
Price last confirmed 53 days ago
Retailer 11
-
$4,313 SGD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$4,434 SGD
View
B+
Retailer 13
-
$4,848 SGD
View
B
Retailer 14
-
$5,084 SGD
View
B
Retailer 15
-
$6,965 SGD
View
Most Expensive
NZ Jewellers
bdcd893b-9df2-49a8-b8b8-b0fae6f44362 · Oct 21
$7,187 SGD
$5,608 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $3,114 SGDSave up to $3,851 SGD

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 Heart
$3,114 SGD