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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 $4,849 NZD
As of November 6, 2026
Save $6,196 NZD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,045 NZD 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 $4,849 to $11,045, a $6,196 spread on the same certified stone. MOH London lists it at $11,045. 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: $11,045 NZD|Low: $4,849 NZD|High: $11,207 NZD|Avg: $7,074 NZD|-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$4,849 NZD
Retailer 8$5,551 NZD
Retailer 11$6,112 NZD
Retailer 2$6,216 NZD
Retailer 4$6,249 NZD
Retailer 6$6,756 NZD
Retailer 9$6,857 NZD
Retailer 3$7,093 NZD
Retailer 5$7,708 NZD
Retailer 7$8,083 NZD
MOH London$11,045 NZD

34 data points across 11 retailers

16 retailers$4,849 NZD to $11,045 NZD

A
Cheapest Retailer
-
$4,849 NZD
A
Retailer 2
-
$5,551 NZD
View
A
Retailer 3
-
$5,834 NZD
View
A
Retailer 4
-
$5,879 NZD
View
B+
Retailer 5
-
$6,112 NZD
View
Final sale: no returns
B+
Retailer 6
-
$6,216 NZD
View
A
Retailer 7
-
$6,249 NZD
View
B+
Retailer 8
-
$6,350 NZD
View
B+
Retailer 9
-
$6,756 NZD
View
A
Retailer 10
-
$6,857 NZD
View
B+
Retailer 11
-
$6,884 NZD
View
Retailer 12
-
$7,093 NZD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$7,708 NZD
View
B+
Retailer 14
-
$8,083 NZD
View
B
Retailer 15
-
$9,395 NZD
View
Most Expensive
B
MOH London
C664DE5D8 · Nov 4
$11,045 NZD
£4,821 GBP
View
15 more retailers have this diamond
Prices start from $4,849 NZDSave up to $6,196 NZD

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
$4,849 NZD