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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 $3,781 CAD
As of November 4, 2026
Save $4,831 CAD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,612 CAD 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 $3,781 to $8,612, a $4,831 spread on the same certified stone. MOH London lists it at $8,612. 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
Color
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 4
Current: $8,612 CAD|Low: $3,781 CAD|High: $8,739 CAD|Avg: $5,513 CAD|-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 9$3,781 CAD
Retailer 7$4,328 CAD
Retailer 10$4,449 CAD
Retailer 11$4,766 CAD
Retailer 2$4,872 CAD
Retailer 5$5,268 CAD
Retailer 8$5,346 CAD
Retailer 3$5,531 CAD
Retailer 4$6,010 CAD
Retailer 6$6,303 CAD
MOH London$8,612 CAD

34 data points across 11 retailers

16 retailers$3,781 CAD to $8,612 CAD

A
Cheapest Retailer
-
$3,781 CAD
A
Retailer 2
-
$4,328 CAD
View
A
Retailer 3
-
$4,449 CAD
View
A
Retailer 4
-
$4,549 CAD
View
A
Retailer 5
-
$4,584 CAD
View
B+
Retailer 6
-
$4,766 CAD
View
Final sale: no returns
A
Retailer 7
-
$4,872 CAD
View
B+
Retailer 8
-
$4,951 CAD
View
B+
Retailer 9
-
$5,268 CAD
View
A
Retailer 10
-
$5,346 CAD
View
B+
Retailer 11
-
$5,368 CAD
View
Retailer 12
-
$5,531 CAD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$6,010 CAD
View
B+
Retailer 14
-
$6,303 CAD
View
B
Retailer 15
-
$7,326 CAD
View
Most Expensive
B
MOH London
C664DE5D8 · Nov 4
$8,612 CAD
£4,821 GBP
View
15 more retailers have this diamond
Prices start from $3,781 CADSave up to $4,831 CAD

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
$3,781 CAD