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Heart|Natural|GIA

1.00ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5373297754

Certificate GIA 5373297754

Diamond specifications and retailer prices

From $3,254 NZD
As of November 1, 2026
Save $4,402 NZD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,137 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded H 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 5373297754. Listed at 18 retailers as of November 1, 2026, with a 135% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5373297754
Dimensions6.23 × 6.76 × 4.02 mm
L/W Ratio1.09
Top View
6.23 mm6.76 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5373297754
Side View
Table 56.0%CrownGirdlePavilionCulet: NoneDepth 59.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $9,137 NZD|Low: $2,863 NZD|High: $9,137 NZD|Avg: $4,529 NZD|+12.6%
NZ Jewellers
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 15$3,254 NZD
Retailer 7$3,833 NZD
Retailer 4$3,949 NZD
Retailer 5$4,034 NZD
Retailer 18$4,104 NZD
Retailer 2$4,263 NZD
Retailer 8$4,347 NZD
Retailer 9$4,371 NZD
Retailer 19$4,371 NZD
Retailer 10$4,521 NZD
Retailer 6$4,573 NZD
Retailer 3$4,622 NZD
Retailer 13$4,668 NZD
Retailer 11$4,771 NZD
Retailer 17$5,044 NZD
Retailer 16$5,372 NZD
Retailer 12$5,457 NZD
Retailer 14$7,656 NZD
NZ Jewellers$9,137 NZD

26 data points across 19 retailers

18 retailers$3,254 NZD to $7,656 NZD

B+
Cheapest Retailer
-
$3,254 NZD
B+
Retailer 2
-
$3,833 NZD
View
B
Retailer 3
-
$3,949 NZD
View
B
Retailer 4
-
$4,104 NZD
View
B
Retailer 5
-
$4,263 NZD
View
B
Retailer 6
-
$4,347 NZD
View
Retailer 7
-
$4,371 NZD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$4,371 NZD
View
Retailer 9
-
$4,521 NZD
View
Price last confirmed 11 days ago
Retailer 10
-
$4,573 NZD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$4,622 NZD
View
B
Retailer 12
-
$4,668 NZD
View
Retailer 13
-
$4,771 NZD
View
Price last confirmed 32 days ago
B
Retailer 14
-
$5,044 NZD
View
B
Retailer 15
-
$5,372 NZD
View
B
Retailer 16
-
$5,457 NZD
View
C
Retailer 17
-
$7,656 NZD
View
Most Expensive
NZ Jewellers
6b5f2e47-1db7-4726-ab8a-80bb7a4a861b · Oct 30
$9,137 NZD
$5,065 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from $3,254 NZDSave up to $4,402 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.

B+
1.00ct Heart
$3,254 NZD