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Heart|Natural|GIA

1.28ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 7556044238

Certificate GIA 7556044238

Diamond specifications and retailer prices

From $3,406 NZD
As of November 4, 2026
Save $4,435 NZD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,484 NZD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7556044238. Listed at 17 retailers as of November 4, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556044238
Dimensions6.65 × 7.51 × 4.34 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.65 mm7.51 mm1.28 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556044238
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.7%

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: $4,749 NZD|Low: $3,406 NZD|High: $8,623 NZD|Avg: $5,161 NZD|-7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 5, 2026
Retailer 10$3,406 NZD
Retailer 3$3,942 NZD
Retailer 9$4,023 NZD
Retailer 12$4,142 NZD
Retailer 13$4,258 NZD
Retailer 4$4,266 NZD
Retailer 11$4,444 NZD
Retailer 5$4,666 NZD
Retailer 1$4,749 NZD
Retailer 2$4,839 NZD
Retailer 7$5,464 NZD
Retailer 15$5,789 NZD
Retailer 14$7,032 NZD
Retailer 6$7,078 NZD
Retailer 8$7,841 NZD

27 data points across 15 retailers

17 retailers$3,406 NZD to $7,841 NZD

A
Cheapest Retailer
-
$3,406 NZD
Retailer 2
-
$3,942 NZD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$4,023 NZD
View
A
Retailer 4
-
$4,142 NZD
View
Final sale: no returns
A
Retailer 5
-
$4,258 NZD
View
Retailer 6
-
$4,266 NZD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$4,444 NZD
View
A
Retailer 8
-
$4,666 NZD
View
A
Retailer 9
-
$4,749 NZD
View
A
Retailer 10
-
$4,839 NZD
View
B+
Retailer 11
-
$5,313 NZD
View
Retailer 12
-
$5,464 NZD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$5,789 NZD
View
B
Retailer 14
-
$7,032 NZD
View
B
Retailer 15
-
$7,078 NZD
View
B+
Retailer 16
-
$7,841 NZD
View
Most Expensive
NZ Jewellers
51cf11a4-94cb-49a5-b5c0-8df3dfc5fe88 · Sep 25
$10,484 NZD
$5,910 USD
View
Price last confirmed 40 days ago
16 more retailers have this diamond
Prices start from $3,406 NZDSave up to $4,435 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
$3,406 NZD