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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 5546346351

Certificate GIA 5546346351

Diamond specifications and retailer prices

From $4,364 NZD
As of November 6, 2026
Save $5,215 NZD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,578 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5546346351. Listed at 14 retailers as of November 4, 2026, with prices from $4,364 to $9,578, a $5,215 spread on the same certified stone. MOH London lists it at $9,578. 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
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5546346351
Dimensions7.01 × 7.97 × 4.70 mm
L/W Ratio1.14
Top View
7.01 mm7.97 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5546346351
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.9%

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: $9,578 NZD|Low: $4,340 NZD|High: $11,084 NZD|Avg: $6,240 NZD|-12.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$4,364 NZD
Retailer 4$4,697 NZD
Retailer 2$5,031 NZD
Retailer 3$5,942 NZD
Retailer 6$6,002 NZD
Retailer 8$6,083 NZD
Retailer 9$6,126 NZD
Retailer 7$6,169 NZD
MOH London$9,578 NZD

45 data points across 9 retailers

14 retailers$4,364 NZD to $9,578 NZD

A
Cheapest Retailer
-
$4,364 NZD
A
Retailer 2
-
$4,697 NZD
View
A
Retailer 3
-
$5,031 NZD
View
A
Retailer 4
-
$5,942 NZD
View
A
Retailer 5
-
$6,002 NZD
View
Retailer 6
-
$6,083 NZD
View
Price last confirmed 10 days ago
A
Retailer 7
-
$6,126 NZD
View
A
Retailer 8
-
$6,169 NZD
View
A
Retailer 9
-
$6,469 NZD
View
Retailer 10
-
$6,550 NZD
View
Price last confirmed 29 days ago
Retailer 11
-
$6,550 NZD
View
Price last confirmed 29 days ago
Retailer 12
-
$6,801 NZD
View
Price last confirmed 36 days ago
Retailer 13
-
$7,557 NZD
View
Price last confirmed 38 days ago
Most Expensive
B+
MOH London
0FB90FE62 · Nov 4
$9,578 NZD
£4,181 GBP
View
13 more retailers have this diamond
Prices start from $4,364 NZDSave up to $5,215 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
$4,364 NZD