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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2245042739

Certificate GIA 2245042739

Diamond specifications and retailer prices

From €1,444 EUR
As of November 6, 2026
Save €2,665 EUR (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,108 EUR at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245042739. Listed at 12 retailers as of November 5, 2026, with prices from €1,444 to €4,108, a €2,665 spread on the same certified stone. NZ Jewellers lists it at €4,108. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 2245042739
Dimensions6.61 × 7.21 × 4.29 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.61 mm7.21 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245042739
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 38.94°Culet: NoneDepth 59.5%

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: €4,108 EUR|Low: €1,444 EUR|High: €4,390 EUR|Avg: €2,486 EUR|-6.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10€1,444 EUR
Retailer 3€1,863 EUR
Retailer 4€1,906 EUR
Retailer 7€1,965 EUR
Retailer 6€2,008 EUR
Retailer 9€2,056 EUR
Retailer 8€2,160 EUR
Retailer 5€2,434 EUR
Retailer 11€3,000 EUR
Retailer 2€3,424 EUR
NZ Jewellers€4,108 EUR

38 data points across 11 retailers

12 retailers€1,444 EUR to €4,108 EUR

A
Cheapest Retailer
-
€1,444 EUR
B+
Retailer 2
-
€1,863 EUR
View
B+
Retailer 3
-
€1,906 EUR
View
B+
Retailer 4
-
€1,965 EUR
View
B+
Retailer 5
-
€2,008 EUR
View
B+
Retailer 6
-
€2,056 EUR
View
B+
Retailer 7
-
€2,160 EUR
View
B
Retailer 8
-
€2,210 EUR
View
B+
Retailer 9
-
€2,434 EUR
View
B
Retailer 10
-
€3,000 EUR
View
B
Retailer 11
-
€3,424 EUR
View
Most Expensive
B
NZ Jewellers
4f1787ab-5746-4b1c-9857-b23407ac4cfd · Nov 5
€4,108 EUR
$4,587 USD
View
11 more retailers have this diamond
Prices start from €1,444 EURSave up to €2,665 EUR

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
€1,444 EUR