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Heart|Natural|GIA

1.21ct J IF Heart Natural Diamond

EX • J/IF • GIA 6233888573

Certificate GIA 6233888573

Diamond specifications and retailer prices

From $3,139 NZD
As of November 6, 2026
Save $4,732 NZD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,001 NZD at NZ Jewellers · As of September 25, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233888573. Listed at 14 retailers as of November 6, 2026, with a 151% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle43.5°
OriginNatural
Grading LabGIA
CertificateGIA 6233888573
Dimensions6.09 × 7.28 × 4.63 mm
L/W Ratio1.20
Top View
6.09 mm7.28 mm1.21 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233888573
Side View
Table 58.0%CrownGirdle: STK-THKPavilion 43.5°Culet: NoneDepth 63.6%

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: $7,870 NZD|Low: $3,094 NZD|High: $8,471 NZD|Avg: $4,959 NZD|-7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 11$3,139 NZD
Retailer 8$3,961 NZD
Retailer 12$4,169 NZD
Retailer 5$4,172 NZD
Retailer 6$4,360 NZD
Retailer 3$4,452 NZD
Retailer 10$4,483 NZD
Retailer 2$4,889 NZD
Retailer 4$5,210 NZD
Retailer 7$5,513 NZD
Retailer 9$6,626 NZD
Retailer 1$7,870 NZD

38 data points across 12 retailers

14 retailers$3,139 NZD to $7,870 NZD

A
Cheapest Retailer
-
$3,139 NZD
A
Retailer 2
-
$3,961 NZD
View
B+
Retailer 3
-
$4,169 NZD
View
Final sale: no returns
A
Retailer 4
-
$4,172 NZD
View
B+
Retailer 5
-
$4,360 NZD
View
B+
Retailer 6
-
$4,452 NZD
View
B+
Retailer 7
-
$4,483 NZD
View
B+
Retailer 8
-
$4,863 NZD
View
B+
Retailer 9
-
$4,889 NZD
View
Retailer 10
-
$5,210 NZD
View
Price last confirmed 31 days ago
B+
Retailer 11
-
$5,513 NZD
View
B+
Retailer 12
-
$6,626 NZD
View
B
Retailer 13
-
$7,870 NZD
View
Most Expensive
NZ Jewellers
f2d8670a-b951-4523-b930-6f0b80e5dcb6 · Sep 25
$10,001 NZD
$5,544 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $3,139 NZDSave up to $4,732 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
$3,139 NZD