CaratHunter
Plans
Heart|Natural|GIA

1.28ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 1505137931

Certificate GIA 1505137931

Diamond specifications and retailer prices

From $4,481 NZD
As of November 6, 2026
Save $4,287 NZD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,767 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 1.28ct natural heart diamond

This 1.28ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1505137931. Listed at 11 retailers as of November 2, 2026, with prices from $4,481 to $8,767, a $4,287 spread on the same certified stone. MOH London lists it at $8,767. 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

1.28
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1505137931
Dimensions6.52 × 6.18 × 3.97 mm
L/W Ratio1.06
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle
Top View
6.52 mm6.18 mm1.28 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 1505137931
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.3%

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: $8,767 NZD|Low: $4,153 NZD|High: $8,978 NZD|Avg: $5,699 NZD|-2.3%
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 8$4,481 NZD
Retailer 10$4,618 NZD
Retailer 2$4,807 NZD
Retailer 11$4,827 NZD
Retailer 7$4,916 NZD
Retailer 6$4,917 NZD
Retailer 9$5,065 NZD
Retailer 4$5,769 NZD
Retailer 3$5,942 NZD
Retailer 5$6,106 NZD
MOH London$8,767 NZD

35 data points across 11 retailers

11 retailers$4,481 NZD to $8,767 NZD

A
Cheapest Retailer
-
$4,481 NZD
A
Retailer 2
-
$4,618 NZD
View
Final sale: no returns
A
Retailer 3
-
$4,807 NZD
View
A
Retailer 4
-
$4,827 NZD
View
A
Retailer 5
-
$4,916 NZD
View
A
Retailer 6
-
$4,917 NZD
View
A
Retailer 7
-
$5,065 NZD
View
A
Retailer 8
-
$5,769 NZD
View
Retailer 9
-
$5,942 NZD
View
Price last confirmed 30 days ago
A
Retailer 10
-
$6,106 NZD
View
Most Expensive
B+
MOH London
9571DD178 · Nov 2
$8,767 NZD
£3,827 GBP
View
10 more retailers have this diamond
Prices start from $4,481 NZDSave up to $4,287 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
1.28ct Heart
$4,481 NZD