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Heart|Natural|IGI

1.23ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 704515160

Shape and cutting style on the report: Heart brilliant

Certificate IGI 704515160

Diamond specifications and retailer prices

From €1,232 EUR
As of November 6, 2026
Save €2,077 EUR (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,309 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 704515160. Listed at 15 retailers as of November 5, 2026, with prices from €1,232 to €3,309, a €2,077 spread on the same certified stone. NZ Jewellers lists it at €3,309. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 704515160
Dimensions6.52 × 7.39 × 4.43 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Top View
6.52 mm7.39 mm1.23 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 704515160
Side View
Table 58.0%Crown 35.2°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 59.9%

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: €3,309 EUR|Low: €1,232 EUR|High: €3,409 EUR|Avg: €1,718 EUR|-2.9%
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 7, 2026
Retailer 11€1,232 EUR
Retailer 12€1,239 EUR
Retailer 10€1,258 EUR
Retailer 13€1,296 EUR
Retailer 4€1,357 EUR
Retailer 2€1,398 EUR
Retailer 7€1,398 EUR
Retailer 5€1,412 EUR
Retailer 6€1,416 EUR
Retailer 14€1,457 EUR
Retailer 9€1,497 EUR
Retailer 15€1,542 EUR
Retailer 3€1,655 EUR
Retailer 8€2,328 EUR
NZ Jewellers€3,309 EUR

31 data points across 15 retailers

15 retailers€1,232 EUR to €3,309 EUR

A
Cheapest Retailer
-
€1,232 EUR
Final sale: no returns
A
Retailer 2
-
€1,239 EUR
View
A
Retailer 3
-
€1,258 EUR
View
A
Retailer 4
-
€1,296 EUR
View
A
Retailer 5
-
€1,357 EUR
View
A
Retailer 6
-
€1,398 EUR
View
Retailer 7
-
€1,398 EUR
View
Price last confirmed 9 days ago
B+
Retailer 8
-
€1,412 EUR
View
B+
Retailer 9
-
€1,416 EUR
View
B+
Retailer 10
-
€1,457 EUR
View
A
Retailer 11
-
€1,497 EUR
View
B+
Retailer 12
-
€1,542 EUR
View
B+
Retailer 13
-
€1,655 EUR
View
B
Retailer 14
-
€2,328 EUR
View
Most Expensive
B
NZ Jewellers
8ef5a5f5-41e0-40cf-9bc2-8ee8a1456da3 · Nov 5
€3,309 EUR
$3,695 USD
View
14 more retailers have this diamond
Prices start from €1,232 EURSave up to €2,077 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
1.23ct Heart
€1,232 EUR