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Round|Lab Grown|IGI

1.23ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG817677827

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817677827

Diamond specifications and retailer prices

From €166 EUR
$186 USD
As of October 29, 2026
Save €1,266 EUR (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,432 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817677827 or 817677827. Listed at 12 retailers as of October 29, 2026, with prices from €166 to €1,432, a €1,266 spread on the same certified stone. Brilliant Earth lists it at €1,432. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817677827
Dimensions6.92 × 6.90 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.92 mm6.90 mm1.23 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817677827
Side View
Table 59.0%Crown 33.1°Girdle: MediumPavilion 41°Culet: NoneDepth 60.7%

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: Oct 29
Current: €1,432 EUR|Low: €166 EUR|High: €1,477 EUR|Avg: €627 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11€166 EUR
Retailer 8€193 EUR
Retailer 9€288 EUR
Retailer 2€357 EUR
Retailer 6€504 EUR
Retailer 10€533 EUR
Retailer 7€664 EUR
Retailer 3€712 EUR
Retailer 4€971 EUR
Retailer 5€1,070 EUR
Brilliant Earth€1,432 EUR

32 data points across 11 retailers

12 retailers€166 EUR to €1,432 EUR

A
Cheapest Retailer
-
€166 EUR
$186 USD
A
Retailer 2
-
€193 EUR
$216 USD
View
B+
Retailer 3
-
€288 EUR
$322 USD
View
A
Retailer 4
-
€357 EUR
View
A
Retailer 5
-
€504 EUR
A$866 AUD
View
A
Retailer 6
-
€533 EUR
$596 USD
View
B+
Retailer 7
-
€664 EUR
$742 USD
View
B+
Retailer 8
-
€712 EUR
$795 USD
View
B+
Retailer 9
-
€971 EUR
£854 GBP
View
B+
Retailer 10
-
€1,070 EUR
$1,195 USD
View
Retailer 11
-
€1,432 EUR
$1,600 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21493851A · Oct 29
€1,432 EUR
$1,600 USD
View
11 more retailers have this diamond
Prices start from €166 EURSave up to €1,266 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
€166 EUR