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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 2231913358

Certificate GIA 2231913358

Diamond specifications and retailer prices

From $4,608 SGD
$3,603 USD
As of November 1, 2026
Save $5,467 SGD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,915 SGD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two 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 2231913358. Listed at 13 retailers as of November 1, 2026, with a 119% 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

1.51
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2231913358
Dimensions6.60 × 7.79 × 4.80 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
6.60 mm7.79 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231913358
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.6%

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: $10,915 SGD|Low: $4,366 SGD|High: $10,915 SGD|Avg: $6,536 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
November 2, 2026
Retailer 6$4,608 SGD
Retailer 12$4,843 SGD
Retailer 9$5,240 SGD
Retailer 10$5,676 SGD
Retailer 11$5,676 SGD
Retailer 13$5,676 SGD
Retailer 15$5,742 SGD
Retailer 7$6,410 SGD
Retailer 3$6,446 SGD
Retailer 14$6,446 SGD
Retailer 5$6,549 SGD
Retailer 4$6,663 SGD
Retailer 2$7,157 SGD
Retailer 8$10,075 SGD
NZ Jewellers$10,915 SGD

26 data points across 15 retailers

13 retailers$4,608 SGD to $10,075 SGD

A
Cheapest Retailer
-
$4,608 SGD
$3,603 USD
A
Retailer 2
-
$4,843 SGD
$3,787 USD
View
A
Retailer 3
-
$5,240 SGD
$4,097 USD
View
Final sale: no returns
Retailer 4
-
$5,676 SGD
$4,438 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$5,676 SGD
$4,438 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$5,742 SGD
$4,490 USD
View
B+
Retailer 7
-
$6,446 SGD
$5,040 USD
View
B+
Retailer 8
-
$6,446 SGD
$5,040 USD
View
Retailer 9
-
$6,549 SGD
$5,121 USD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
$6,663 SGD
$5,210 USD
View
B+
Retailer 11
-
$7,157 SGD
€5,330 EUR
View
B
Retailer 12
-
$10,075 SGD
£6,203 GBP
View
Most Expensive
NZ Jewellers
e31a8be5-9c8e-44d7-bb7e-e2e4fc9652f5 · Oct 21
$10,915 SGD
$8,535 USD
View
Price last confirmed 12 days ago
12 more retailers have this diamond
Prices start from $4,608 SGDSave up to $5,467 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
1.51ct Heart
$4,608 SGD