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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 1439777400

Certificate GIA 1439777400

Diamond specifications and retailer prices

From $3,445 SGD
As of November 6, 2026
Save $4,402 SGD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,847 SGD at MOH London · As of November 4, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1439777400. Listed at 16 retailers as of November 4, 2026, with prices from $3,445 to $7,847, a $4,402 spread on the same certified stone. MOH London lists it at $7,847. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.26°
Pavilion angle55.01°
OriginNatural
Grading LabGIA
CertificateGIA 1439777400
Dimensions6.39 × 6.34 × 4.43 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
6.39 mm6.34 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1439777400
Side View
Table 62.0%Crown 42.26°Girdle: MED-STKPavilion 55.01°Culet: NoneDepth 69.8%

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: $7,847 SGD|Low: $3,445 SGD|High: $7,962 SGD|Avg: $5,026 SGD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$3,445 SGD
Retailer 8$3,943 SGD
Retailer 11$4,342 SGD
Retailer 2$4,416 SGD
Retailer 4$4,439 SGD
Retailer 6$4,800 SGD
Retailer 9$4,871 SGD
Retailer 3$5,039 SGD
Retailer 5$5,476 SGD
Retailer 7$5,743 SGD
MOH London$7,847 SGD

34 data points across 11 retailers

16 retailers$3,445 SGD to $7,847 SGD

A
Cheapest Retailer
-
$3,445 SGD
A
Retailer 2
-
$3,943 SGD
View
A
Retailer 3
-
$4,145 SGD
View
A
Retailer 4
-
$4,177 SGD
View
B+
Retailer 5
-
$4,342 SGD
View
Final sale: no returns
B+
Retailer 6
-
$4,416 SGD
View
A
Retailer 7
-
$4,439 SGD
View
B+
Retailer 8
-
$4,511 SGD
View
B+
Retailer 9
-
$4,800 SGD
View
A
Retailer 10
-
$4,871 SGD
View
B+
Retailer 11
-
$4,891 SGD
View
Retailer 12
-
$5,039 SGD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$5,476 SGD
View
B+
Retailer 14
-
$5,743 SGD
View
B
Retailer 15
-
$6,675 SGD
View
Most Expensive
B
MOH London
C664DE5D8 · Nov 4
$7,847 SGD
£4,821 GBP
View
15 more retailers have this diamond
Prices start from $3,445 SGDSave up to $4,402 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
$3,445 SGD