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Heart|Natural|GIA

1.21ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 6545536297

Certificate GIA 6545536297

Diamond specifications and retailer prices

From $2,931 NZD
As of November 6, 2026
Save $3,833 NZD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,137 NZD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded J 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 6545536297. Listed at 13 retailers as of November 4, 2026, with a 131% 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

1.21
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545536297
Dimensions6.60 × 7.43 × 4.32 mm
L/W Ratio1.13
Top View
6.60 mm7.43 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545536297
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.1%

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: $8,137 NZD|Low: $2,931 NZD|High: $8,137 NZD|Avg: $4,493 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$2,931 NZD
Retailer 2$3,065 NZD
Retailer 9$3,893 NZD
Retailer 10$3,893 NZD
Retailer 6$4,059 NZD
Retailer 3$4,080 NZD
Retailer 4$4,207 NZD
Retailer 8$4,492 NZD
Retailer 5$6,765 NZD
NZ Jewellers$8,137 NZD

42 data points across 10 retailers

13 retailers$2,931 NZD to $6,765 NZD

A
Cheapest Retailer
-
$2,931 NZD
A
Retailer 2
-
$3,065 NZD
View
B+
Retailer 3
-
$3,703 NZD
View
Retailer 4
-
$3,893 NZD
View
Price last confirmed 21 days ago
Retailer 5
-
$3,893 NZD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$3,996 NZD
View
B+
Retailer 7
-
$4,059 NZD
View
Retailer 8
-
$4,071 NZD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$4,080 NZD
View
B+
Retailer 10
-
$4,207 NZD
View
Retailer 11
-
$4,492 NZD
View
Price last confirmed 18 days ago
B
Retailer 12
-
$6,765 NZD
View
Most Expensive
NZ Jewellers
fa3577ee-5542-49c3-a737-58f41377a77e · Oct 18
$8,137 NZD
$4,511 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from $2,931 NZDSave up to $3,833 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
1.21ct Heart
$2,931 NZD