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Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1242032984

Certificate GIA 1242032984

Diamond specifications and retailer prices

From $3,674 SGD
As of November 6, 2026
Save $4,628 SGD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,390 SGD at NZ Jewellers · As of September 25, 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 J 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 1242032984. Listed at 14 retailers as of November 2, 2026, with a 126% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242032984
Dimensions7.79 × 6.57 × 4.88 mm
L/W Ratio1.19
Girdle conditionFaceted
Top View
7.79 mm6.57 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242032984
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,638 SGD|Low: $3,624 SGD|High: $9,122 SGD|Avg: $5,527 SGD|-4.1%
Retailer 1
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$3,674 SGD
Retailer 6$4,168 SGD
Retailer 8$4,482 SGD
Retailer 2$4,486 SGD
Retailer 11$4,582 SGD
Retailer 1$4,638 SGD
Retailer 5$4,691 SGD
Retailer 12$5,472 SGD
Retailer 4$5,703 SGD
Retailer 7$6,059 SGD
Retailer 3$7,714 SGD
Retailer 9$8,302 SGD

37 data points across 12 retailers

14 retailers$3,674 SGD to $8,302 SGD

A
Cheapest Retailer
-
$3,674 SGD
A
Retailer 2
-
$4,168 SGD
View
B+
Retailer 3
-
$4,482 SGD
View
A
Retailer 4
-
$4,486 SGD
View
B+
Retailer 5
-
$4,582 SGD
View
Final sale: no returns
B+
Retailer 6
-
$4,638 SGD
View
B+
Retailer 7
-
$4,691 SGD
View
B+
Retailer 8
-
$5,379 SGD
View
B+
Retailer 9
-
$5,472 SGD
View
Retailer 10
-
$5,703 SGD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$6,059 SGD
View
B
Retailer 12
-
$7,714 SGD
View
B
Retailer 13
-
$8,302 SGD
View
Most Expensive
NZ Jewellers
dcac04e0-fe8a-49e0-9bfa-ded47dca4470 · Sep 25
$9,390 SGD
$7,327 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $3,674 SGDSave up to $4,628 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
$3,674 SGD