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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 7548658345

Certificate GIA 7548658345

Diamond specifications and retailer prices

From $5,807 SGD
As of November 6, 2026
Save $6,244 SGD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,295 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 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 7548658345. Listed at 18 retailers as of November 6, 2026, with a 108% 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
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.1°
OriginNatural
Grading LabGIA
CertificateGIA 7548658345
Dimensions6.85 × 7.92 × 4.61 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.85 mm7.92 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7548658345
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 40.1°Culet: NoneDepth 58.2%

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: $6,518 SGD|Low: $5,725 SGD|High: $12,907 SGD|Avg: $7,723 SGD|-6.8%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 5$5,807 SGD
Retailer 7$5,835 SGD
Retailer 14$6,190 SGD
Retailer 6$6,362 SGD
Retailer 2$6,459 SGD
Retailer 13$6,498 SGD
Retailer 1$6,518 SGD
Retailer 11$6,575 SGD
Retailer 3$6,857 SGD
Retailer 4$7,295 SGD
Retailer 9$7,305 SGD
Retailer 16$7,801 SGD
Retailer 8$8,107 SGD
Retailer 10$9,283 SGD
Retailer 12$11,178 SGD
Retailer 15$12,051 SGD

27 data points across 16 retailers

18 retailers$5,807 SGD to $12,051 SGD

A
Cheapest Retailer
-
$5,807 SGD
Retailer 2
-
$5,835 SGD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$6,190 SGD
View
A
Retailer 4
-
$6,362 SGD
View
Final sale: no returns
A
Retailer 5
-
$6,459 SGD
View
A
Retailer 6
-
$6,498 SGD
View
A
Retailer 7
-
$6,518 SGD
View
A
Retailer 8
-
$6,575 SGD
View
A
Retailer 9
-
$6,857 SGD
View
B+
Retailer 10
-
$7,295 SGD
View
B+
Retailer 11
-
$7,305 SGD
View
B+
Retailer 12
-
$7,801 SGD
View
Retailer 13
-
$8,107 SGD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$8,387 SGD
View
B+
Retailer 15
-
$9,283 SGD
View
B
Retailer 16
-
$11,178 SGD
View
B
Retailer 17
-
$12,051 SGD
View
Most Expensive
NZ Jewellers
dfd524f4-d138-4721-ad10-4a247a2a057c · Sep 25
$14,295 SGD
$11,154 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from $5,807 SGDSave up to $6,244 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
$5,807 SGD