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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 €1,246 EUR
$1,398 USD
As of October 30, 2026
Save €2,048 EUR (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,294 EUR at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from €1,246 to €3,294, a €2,048 spread on the same certified stone. NZ Jewellers lists it at €3,294. 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
Color
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: Oct 30
Current: €3,294 EUR|Low: €1,246 EUR|High: €3,393 EUR|Avg: €1,701 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
October 31, 2026
Retailer 5€1,246 EUR
Retailer 6€1,321 EUR
Retailer 8€1,392 EUR
Retailer 10€1,392 EUR
Retailer 3€1,433 EUR
Retailer 9€1,456 EUR
Retailer 2€1,520 EUR
Retailer 11€1,606 EUR
Retailer 4€1,649 EUR
Retailer 7€2,450 EUR
NZ Jewellers€3,294 EUR

39 data points across 11 retailers

15 retailers€1,246 EUR to €3,294 EUR

A
Cheapest Retailer
-
€1,246 EUR
$1,398 USD
Final sale: no returns
A
Retailer 2
-
€1,289 EUR
$1,446 USD
View
A
Retailer 3
-
€1,293 EUR
$1,450 USD
View
A
Retailer 4
-
€1,321 EUR
£1,167 GBP
View
B+
Retailer 5
-
€1,392 EUR
$1,561 USD
View
B+
Retailer 6
-
€1,392 EUR
$1,561 USD
View
B+
Retailer 7
-
€1,433 EUR
$1,607 USD
View
B+
Retailer 8
-
€1,454 EUR
$1,631 USD
View
A
Retailer 9
-
€1,456 EUR
$1,633 USD
View
B+
Retailer 10
-
€1,513 EUR
$1,697 USD
View
B+
Retailer 11
-
€1,520 EUR
£1,342 GBP
View
B+
Retailer 12
-
€1,606 EUR
$1,801 USD
View
B+
Retailer 13
-
€1,649 EUR
ZAR 29,871 ZAR
View
B
Retailer 14
-
€2,450 EUR
£2,164 GBP
View
Most Expensive
B
NZ Jewellers
8ef5a5f5-41e0-40cf-9bc2-8ee8a1456da3 · Oct 30
€3,294 EUR
$3,695 USD
View
14 more retailers have this diamond
Prices start from €1,246 EURSave up to €2,048 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
€1,246 EUR