CaratHunter
Plans
Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1543577711

Certificate GIA 1543577711

Diamond specifications and retailer prices

From $3,855 SGD
As of November 6, 2026
Save $4,601 SGD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,867 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 I 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 1543577711. Listed at 17 retailers as of November 2, 2026, with a 119% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543577711
Dimensions7.23 × 7.94 × 4.63 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Cavity, Needle
Top View
7.23 mm7.94 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543577711
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.3%

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 6
Current: $4,072 SGD|Low: $3,855 SGD|High: $9,104 SGD|Avg: $5,301 SGD|-12.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,855 SGD
Retailer 1$4,072 SGD
Retailer 2$4,668 SGD
Retailer 4$4,861 SGD
Retailer 6$5,041 SGD
Retailer 5$5,123 SGD
Retailer 10$5,244 SGD
Retailer 8$5,280 SGD
Retailer 3$5,690 SGD
Retailer 7$8,456 SGD

37 data points across 10 retailers

17 retailers$3,855 SGD to $8,456 SGD

A
Cheapest Retailer
-
$3,855 SGD
A
Retailer 2
-
$4,072 SGD
View
A
Retailer 3
-
$4,668 SGD
View
Final sale: no returns
A
Retailer 4
-
$4,861 SGD
View
A
Retailer 5
-
$5,041 SGD
View
A
Retailer 6
-
$5,123 SGD
View
B+
Retailer 7
-
$5,212 SGD
View
B+
Retailer 8
-
$5,244 SGD
View
B+
Retailer 9
-
$5,280 SGD
View
B+
Retailer 10
-
$5,538 SGD
View
Retailer 11
-
$5,663 SGD
View
Price last confirmed 29 days ago
Retailer 12
-
$5,663 SGD
View
Price last confirmed 36 days ago
Retailer 13
-
$5,663 SGD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$5,690 SGD
View
Retailer 15
-
$6,535 SGD
View
Price last confirmed 38 days ago
B
Retailer 16
-
$8,456 SGD
View
Most Expensive
NZ Jewellers
ee8781a8-47d7-4023-85f6-2e41dd61f5b5 · Sep 30
$9,867 SGD
$7,699 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from $3,855 SGDSave up to $4,601 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
$3,855 SGD