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Heart|Natural|GIA

1.00ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 2557674671

Certificate GIA 2557674671

Diamond specifications and retailer prices

From $2,758 NZD
As of November 6, 2026
Save $3,850 NZD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,833 NZD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-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 2557674671. Listed at 15 retailers as of November 4, 2026, with a 140% 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557674671
Dimensions6.98 × 5.97 × 4.09 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
6.98 mm5.97 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557674671
Side View
Table 63.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 58.7%

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 6
Current: $7,833 NZD|Low: $2,610 NZD|High: $7,833 NZD|Avg: $4,495 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3$2,758 NZD
Retailer 4$3,133 NZD
Retailer 12$3,395 NZD
Retailer 2$3,669 NZD
Retailer 11$3,916 NZD
Retailer 8$4,005 NZD
Retailer 9$4,005 NZD
Retailer 10$4,131 NZD
Retailer 6$4,616 NZD
Retailer 5$5,136 NZD
Retailer 7$6,608 NZD
NZ Jewellers$7,833 NZD

38 data points across 12 retailers

15 retailers$2,758 NZD to $6,608 NZD

A
Cheapest Retailer
-
$2,758 NZD
A
Retailer 2
-
$2,975 NZD
View
Retailer 3
-
$3,395 NZD
View
Price last confirmed 18 days ago
Retailer 4
-
$3,550 NZD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
$3,554 NZD
View
B+
Retailer 6
-
$3,669 NZD
View
Retailer 7
-
$3,916 NZD
View
Price last confirmed 17 days ago
B+
Retailer 8
-
$4,005 NZD
View
B+
Retailer 9
-
$4,005 NZD
View
B
Retailer 10
-
$4,131 NZD
View
B+
Retailer 11
-
$4,450 NZD
View
B+
Retailer 12
-
$4,616 NZD
View
B
Retailer 13
-
$5,136 NZD
View
B
Retailer 14
-
$6,608 NZD
View
Most Expensive
NZ Jewellers
bb374d86-57dd-448b-8eae-e348fdbf6e54 · Oct 21
$7,833 NZD
$4,342 USD
View
Price last confirmed 16 days ago
14 more retailers have this diamond
Prices start from $2,758 NZDSave up to $3,850 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
1.00ct Heart
$2,758 NZD