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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6532728042

Certificate GIA 6532728042

Diamond specifications and retailer prices

From $3,700 SGD
HK$22,600 HKD
As of November 1, 2026
Save $4,623 SGD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,671 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 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 6532728042. Listed at 15 retailers as of November 1, 2026, with a 125% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6532728042
Dimensions6.85 × 7.74 × 4.82 mm
L/W Ratio1.13
Top View
6.85 mm7.74 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6532728042
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.2%

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: $4,821 SGD|Low: $3,667 SGD|High: $8,423 SGD|Avg: $5,058 SGD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$3,700 SGD
Retailer 6$4,250 SGD
Retailer 7$4,379 SGD
Retailer 5$4,499 SGD
Retailer 8$4,594 SGD
Retailer 9$4,654 SGD
Retailer 1$4,821 SGD
Retailer 2$5,091 SGD
Retailer 3$8,322 SGD

40 data points across 9 retailers

15 retailers$3,700 SGD to $8,322 SGD

A
Cheapest Retailer
-
$3,700 SGD
HK$22,600 HKD
A
Retailer 2
-
$4,250 SGD
$3,323 USD
View
A
Retailer 3
-
$4,379 SGD
$3,424 USD
View
A
Retailer 4
-
$4,499 SGD
$3,518 USD
View
A
Retailer 5
-
$4,594 SGD
$3,592 USD
View
Final sale: no returns
A
Retailer 6
-
$4,654 SGD
A$5,598 AUD
View
Retailer 7
-
$4,658 SGD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$4,821 SGD
£2,968 GBP
View
Retailer 9
-
$4,976 SGD
$3,891 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$4,976 SGD
$3,891 USD
View
Price last confirmed 15 days ago
A
Retailer 11
-
$5,091 SGD
£3,134 GBP
View
Retailer 12
-
$5,168 SGD
$4,041 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$5,742 SGD
$4,490 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$8,322 SGD
£5,124 GBP
View
Most Expensive
NZ Jewellers
750cbaa0-97f9-4cd3-94da-a0c5874a4cda · Oct 18
$8,671 SGD
$6,780 USD
View
Price last confirmed 15 days ago
14 more retailers have this diamond
Prices start from $3,700 SGDSave up to $4,623 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
$3,700 SGD