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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6541424633

Certificate GIA 6541424633

Diamond specifications and retailer prices

From $5,544 SGD
As of November 6, 2026
Save $6,123 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,332 SGD at NZ Jewellers · As of October 18, 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 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 6541424633. Listed at 21 retailers as of November 2, 2026, with a 110% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541424633
Dimensions8.03 × 7.35 × 4.73 mm
L/W Ratio1.09
Top View
8.03 mm7.35 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541424633
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.9%

Caratlytics Score

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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: $5,875 SGD|Low: $5,528 SGD|High: $12,150 SGD|Avg: $7,739 SGD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 12$5,544 SGD
Retailer 1$5,875 SGD
Retailer 10$6,186 SGD
Retailer 9$6,614 SGD
Retailer 2$6,762 SGD
Retailer 7$7,035 SGD
Retailer 5$7,105 SGD
Retailer 4$7,413 SGD
Retailer 13$7,524 SGD
Retailer 6$8,243 SGD
Retailer 8$8,939 SGD
Retailer 11$11,668 SGD
Retailer 3$12,101 SGD

28 data points across 13 retailers

21 retailers$5,544 SGD to $11,668 SGD

A
Cheapest Retailer
-
$5,544 SGD
A
Retailer 2
-
$5,875 SGD
View
A
Retailer 3
-
$6,186 SGD
View
A
Retailer 4
-
$6,614 SGD
View
B+
Retailer 5
-
$6,762 SGD
View
Final sale: no returns
B+
Retailer 6
-
$6,840 SGD
View
B+
Retailer 7
-
$6,844 SGD
View
B+
Retailer 8
-
$7,035 SGD
View
Retailer 9
-
$7,105 SGD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
$7,162 SGD
View
Retailer 11
-
$7,373 SGD
View
Price last confirmed 22 days ago
Retailer 12
-
$7,373 SGD
View
Price last confirmed 20 days ago
Retailer 13
-
$7,373 SGD
View
Price last confirmed 22 days ago
Retailer 14
-
$7,413 SGD
View
Price last confirmed 20 days ago
B+
Retailer 15
-
$7,524 SGD
View
B+
Retailer 16
-
$8,243 SGD
View
Retailer 17
-
$8,507 SGD
View
Price last confirmed 19 days ago
B+
Retailer 18
-
$8,939 SGD
View
B
Retailer 19
-
$11,668 SGD
View
Retailer 20
-
$12,101 SGD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
59a2ea00-26f5-4f7a-b541-460bf1524131 · Oct 18
$12,332 SGD
$9,622 USD
View
Price last confirmed 19 days ago
20 more retailers have this diamond
Prices start from $5,544 SGDSave up to $6,123 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
$5,544 SGD