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Heart|Natural|GIA

1.51ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 2428021677

Certificate GIA 2428021677

Diamond specifications and retailer prices

From $6,769 SGD
₹502,966 INR
As of October 29, 2026
Save $5,106 SGD (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $13,409 SGD at NZ Jewellers · As of September 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2428021677. Listed at 14 retailers as of October 29, 2026, with a 75% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2428021677
Dimensions7.77 × 6.49 × 4.04 mm
L/W Ratio1.20
Top View
7.77 mm6.49 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2428021677
Side View
Table 63.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 62.3%

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: Oct 29
Current: $7,691 SGD|Low: $6,456 SGD|High: $11,954 SGD|Avg: $8,494 SGD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2$6,769 SGD
Retailer 5$7,399 SGD
Retailer 1$7,691 SGD
Retailer 6$7,967 SGD
Retailer 4$9,763 SGD
Retailer 3$11,875 SGD

38 data points across 6 retailers

14 retailers$6,769 SGD to $11,875 SGD

A
Cheapest Retailer
-
$6,769 SGD
₹502,966 INR
A
Retailer 2
-
$6,993 SGD
$5,456 USD
View
A
Retailer 3
-
$7,399 SGD
$5,773 USD
View
Final sale: no returns
A
Retailer 4
-
$7,459 SGD
$5,820 USD
View
A
Retailer 5
-
$7,691 SGD
£4,725 GBP
View
Retailer 6
-
$7,967 SGD
A$9,563 AUD
View
Price last confirmed 26 days ago
Retailer 7
-
$8,017 SGD
$6,255 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$8,017 SGD
$6,255 USD
View
Price last confirmed 29 days ago
Retailer 9
-
$8,017 SGD
$6,255 USD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$8,215 SGD
$6,409 USD
View
Retailer 11
-
$9,250 SGD
$7,217 USD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
$9,763 SGD
ZAR 123,052 ZAR
View
B+
Retailer 13
-
$11,875 SGD
£7,295 GBP
View
Most Expensive
NZ Jewellers
94360ed0-22fa-4d0b-a857-5a38282c46ac · Sep 30
$13,409 SGD
$10,462 USD
View
Price last confirmed 29 days ago
13 more retailers have this diamond
Prices start from $6,769 SGDSave up to $5,106 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
$6,769 SGD