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Round|Natural|IGI

1.23ct I IF Round Natural Diamond

EX • I/IF • IGI 670478823

Shape and cutting style on the report: Round brilliant

Certificate IGI 670478823

Diamond specifications and retailer prices

From €2,636 EUR
$2,956 USD
As of November 1, 2026
Save €2,537 EUR (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €5,173 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 670478823. Listed at 14 retailers as of October 30, 2026, with prices from €2,636 to €5,173, a €2,537 spread on the same certified stone. NZ Jewellers lists it at €5,173. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
I
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 670478823
Dimensions6.88 × 6.93 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.88 mm6.93 mm1.23 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670478823
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.8%

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 1
Current: €5,173 EUR|Low: €2,636 EUR|High: €5,312 EUR|Avg: €3,467 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3€2,636 EUR
Retailer 9€2,664 EUR
Retailer 7€2,795 EUR
Retailer 8€2,969 EUR
Retailer 11€2,969 EUR
Retailer 2€3,141 EUR
Retailer 10€3,437 EUR
Retailer 4€3,460 EUR
Retailer 6€3,650 EUR
Retailer 5€4,965 EUR
NZ Jewellers€5,173 EUR

39 data points across 11 retailers

14 retailers€2,636 EUR to €5,173 EUR

A
Cheapest Retailer
-
€2,636 EUR
$2,956 USD
A
Retailer 2
-
€2,664 EUR
$2,988 USD
View
A
Retailer 3
-
€2,795 EUR
$3,135 USD
View
Retailer 4
-
€2,969 EUR
$3,330 USD
View
Price last confirmed 40 days ago
A
Retailer 5
-
€2,969 EUR
$3,330 USD
View
A
Retailer 6
-
€2,969 EUR
$3,330 USD
View
A
Retailer 7
-
€3,141 EUR
£2,774 GBP
View
Retailer 8
-
€3,426 EUR
$3,843 USD
View
Price last confirmed 41 days ago
A
Retailer 9
-
€3,437 EUR
£3,035 GBP
View
A
Retailer 10
-
€3,460 EUR
View
A
Retailer 11
-
€3,650 EUR
ZAR 66,132 ZAR
View
B+
Retailer 12
-
€4,965 EUR
£4,385 GBP
View
Retailer 13
-
€5,173 EUR
$5,802 USD
View
Price last confirmed 42 days ago
Most Expensive
B+
NZ Jewellers
ce240655-d0f7-472d-a127-c50b2e8d956d · Oct 30
€5,173 EUR
$5,802 USD
View
13 more retailers have this diamond
Prices start from €2,636 EURSave up to €2,537 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 Round
€2,636 EUR