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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 €1,563 EUR
HK$13,700 HKD
As of November 2, 2026
Save €2,070 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €4,336 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 1, 2026, with a 132% 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
Color
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 2
Current: €4,336 EUR|Low: €1,563 EUR|High: €4,336 EUR|Avg: €2,427 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
Retailer 15
November 2, 2026
Retailer 8€1,563 EUR
Retailer 2€1,649 EUR
Retailer 15€1,835 EUR
Retailer 10€1,904 EUR
Retailer 4€2,074 EUR
Retailer 6€2,074 EUR
Retailer 14€2,170 EUR
Retailer 5€2,189 EUR
Retailer 11€2,264 EUR
Retailer 3€2,393 EUR
Retailer 13€2,549 EUR
Retailer 7€2,567 EUR
Retailer 9€2,575 EUR
Retailer 12€3,634 EUR
NZ Jewellers€4,336 EUR

31 data points across 15 retailers

18 retailers€1,563 EUR to €3,634 EUR

A
Cheapest Retailer
-
€1,563 EUR
HK$13,700 HKD
A
Retailer 2
-
€1,649 EUR
₹176,192 INR
View
B+
Retailer 3
-
€1,835 EUR
SGD 2,781 SGD
View
B+
Retailer 4
-
€1,904 EUR
$2,135 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,977 EUR
$2,217 USD
View
B+
Retailer 6
-
€1,979 EUR
$2,220 USD
View
Retailer 7
-
€2,074 EUR
$2,326 USD
View
Price last confirmed 15 days ago
Retailer 8
-
€2,074 EUR
$2,326 USD
View
Price last confirmed 17 days ago
B
Retailer 9
-
€2,120 EUR
A$3,658 AUD
View
Retailer 10
-
€2,170 EUR
$2,434 USD
View
Price last confirmed 17 days ago
B
Retailer 11
-
€2,189 EUR
SGD 3,318 SGD
View
B
Retailer 12
-
€2,264 EUR
£1,999 GBP
View
Retailer 13
-
€2,393 EUR
$2,684 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
€2,549 EUR
ZAR 46,193 ZAR
View
Retailer 15
-
€2,567 EUR
A$4,430 AUD
View
Price last confirmed 26 days ago
B
Retailer 16
-
€2,575 EUR
View
B
Retailer 17
-
€3,634 EUR
£3,209 GBP
View
Most Expensive
NZ Jewellers
1d8c86bb-cf4d-4e68-8c48-ec0ff29708cf · Oct 18
€4,336 EUR
$4,863 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from €1,563 EURSave up to €2,070 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
€1,563 EUR