CaratHunter
Plans
Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 1555651065

Certificate GIA 1555651065

Diamond specifications and retailer prices

From $6,027 SGD
As of November 6, 2026
Save $4,345 SGD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,921 SGD at NZ Jewellers · As of September 29, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555651065. Listed at 12 retailers as of November 4, 2026, with a 72% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555651065
Dimensions7.99 × 6.79 × 4.70 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Natural
Top View
7.99 mm6.79 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555651065
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

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: $6,118 SGD|Low: $6,027 SGD|High: $10,526 SGD|Avg: $7,232 SGD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$6,027 SGD
Retailer 1$6,118 SGD
Retailer 3$6,430 SGD
Retailer 5$6,530 SGD
Retailer 2$7,347 SGD
Retailer 4$10,372 SGD

40 data points across 6 retailers

12 retailers$6,027 SGD to $10,372 SGD

A
Cheapest Retailer
-
$6,027 SGD
Final sale: no returns
A
Retailer 2
-
$6,118 SGD
View
A
Retailer 3
-
$6,430 SGD
View
Retailer 4
-
$6,530 SGD
View
Price last confirmed 30 days ago
Retailer 5
-
$6,530 SGD
View
Price last confirmed 30 days ago
Retailer 6
-
$6,530 SGD
View
Price last confirmed 37 days ago
Retailer 7
-
$6,530 SGD
View
Price last confirmed 13 days ago
Retailer 8
-
$6,908 SGD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$7,347 SGD
View
Retailer 10
-
$7,535 SGD
View
Price last confirmed 39 days ago
B
Retailer 11
-
$10,372 SGD
View
Most Expensive
NZ Jewellers
340f49aa-9876-4491-8142-514b4e5a0261 · Sep 29
$10,921 SGD
$8,521 USD
View
Price last confirmed 38 days ago
11 more retailers have this diamond
Prices start from $6,027 SGDSave up to $4,345 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
$6,027 SGD