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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1549768433

Certificate GIA 1549768433

Diamond specifications and retailer prices

From €1,570 EUR
As of November 6, 2026
Save €2,041 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €4,356 EUR at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct 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 1549768433. Listed at 18 retailers as of November 6, 2026, with a 130% 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1549768433
Dimensions6.68 × 7.17 × 4.43 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Indented Natural, Natural
Top View
6.68 mm7.17 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1549768433
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

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: €4,356 EUR|Low: €1,570 EUR|High: €4,356 EUR|Avg: €2,419 EUR
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
November 7, 2026
Retailer 13€1,570 EUR
Retailer 8€1,643 EUR
Retailer 12€1,853 EUR
Retailer 14€1,912 EUR
Retailer 5€2,083 EUR
Retailer 6€2,083 EUR
Retailer 3€2,180 EUR
Retailer 10€2,186 EUR
Retailer 7€2,245 EUR
Retailer 4€2,404 EUR
Retailer 11€2,529 EUR
Retailer 9€2,573 EUR
Retailer 2€3,611 EUR
NZ Jewellers€4,356 EUR

31 data points across 14 retailers

18 retailers€1,570 EUR to €3,611 EUR

A
Cheapest Retailer
-
€1,570 EUR
A
Retailer 2
-
€1,643 EUR
View
B+
Retailer 3
-
€1,853 EUR
View
B+
Retailer 4
-
€1,912 EUR
View
Final sale: no returns
B+
Retailer 5
-
€1,986 EUR
View
B+
Retailer 6
-
€1,988 EUR
View
Retailer 7
-
€2,083 EUR
View
Price last confirmed 20 days ago
Retailer 8
-
€2,083 EUR
View
Price last confirmed 22 days ago
B
Retailer 9
-
€2,129 EUR
View
Retailer 10
-
€2,180 EUR
View
Price last confirmed 22 days ago
B
Retailer 11
-
€2,186 EUR
View
B
Retailer 12
-
€2,245 EUR
View
Retailer 13
-
€2,404 EUR
View
Price last confirmed 19 days ago
B+
Retailer 14
-
€2,529 EUR
View
B
Retailer 15
-
€2,573 EUR
View
Retailer 16
-
€2,579 EUR
View
Price last confirmed 31 days ago
B
Retailer 17
-
€3,611 EUR
View
Most Expensive
NZ Jewellers
1d8c86bb-cf4d-4e68-8c48-ec0ff29708cf · Oct 18
€4,356 EUR
$4,863 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from €1,570 EURSave up to €2,041 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
1.20ct Heart
€1,570 EUR