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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7546607780

Certificate GIA 7546607780

Diamond specifications and retailer prices

From $5,195 SGD
$4,062 USD
As of November 1, 2026
Save $5,562 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,367 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 H 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 7546607780. Listed at 21 retailers as of November 1, 2026, with a 107% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546607780
Dimensions6.80 × 7.95 × 4.72 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.80 mm7.95 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546607780
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.3%

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: $6,369 SGD|Low: $5,131 SGD|High: $11,594 SGD|Avg: $6,970 SGD|-2.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 17$5,195 SGD
Retailer 12$5,222 SGD
Retailer 16$5,507 SGD
Retailer 14$5,724 SGD
Retailer 7$5,825 SGD
Retailer 2$5,846 SGD
Retailer 8$5,883 SGD
Retailer 5$5,892 SGD
Retailer 4$6,213 SGD
Retailer 1$6,369 SGD
Retailer 11$6,565 SGD
Retailer 15$6,680 SGD
Retailer 9$7,042 SGD
Retailer 10$7,223 SGD
Retailer 3$8,471 SGD
Retailer 13$8,581 SGD
Retailer 18$10,757 SGD
Retailer 6$10,931 SGD

25 data points across 18 retailers

21 retailers$5,195 SGD to $10,757 SGD

A
Cheapest Retailer
-
$5,195 SGD
$4,062 USD
A
Retailer 2
-
$5,222 SGD
HK$31,900 HKD
View
A
Retailer 3
-
$5,507 SGD
$4,306 USD
View
B+
Retailer 4
-
$5,724 SGD
$4,476 USD
View
Final sale: no returns
A
Retailer 5
-
$5,825 SGD
$4,555 USD
View
A
Retailer 6
-
$5,846 SGD
€4,353 EUR
View
A
Retailer 7
-
$5,883 SGD
$4,600 USD
View
A
Retailer 8
-
$5,892 SGD
$4,607 USD
View
B+
Retailer 9
-
$6,213 SGD
$4,858 USD
View
B+
Retailer 10
-
$6,369 SGD
$4,980 USD
View
B+
Retailer 11
-
$6,565 SGD
$5,133 USD
View
Retailer 12
-
$6,608 SGD
$5,167 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$6,680 SGD
£4,113 GBP
View
B+
Retailer 14
-
$7,042 SGD
View
Retailer 15
-
$7,223 SGD
A$8,689 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
$7,605 SGD
A$9,148 AUD
View
B+
Retailer 17
-
$8,471 SGD
ZAR 107,001 ZAR
View
B+
Retailer 18
-
$8,581 SGD
$6,710 USD
View
B
Retailer 19
-
$10,757 SGD
£6,623 GBP
View
Retailer 20
-
$10,931 SGD
$8,548 USD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
dbf135a3-0579-43ef-9381-30a46e39cd96 · Sep 25
$12,367 SGD
$9,670 USD
View
Price last confirmed 38 days ago
20 more retailers have this diamond
Prices start from $5,195 SGDSave up to $5,562 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
$5,195 SGD