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Round|Lab Grown|IGI

1.23ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG816613126

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816613126

Diamond specifications and retailer prices

From €248 EUR
$276 USD
As of October 29, 2026
Save €1,333 EUR (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,581 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816613126 or 816613126. Listed at 20 retailers as of October 29, 2026, with prices from €248 to €1,581, a €1,333 spread on the same certified stone. Brilliant Earth lists it at €1,581. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816613126
Dimensions6.97 × 6.93 × 4.19 mm
L/W Ratio1.01
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
6.97 mm6.93 mm1.23 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816613126
Side View
Table 57.0%Crown 33.3°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.2%

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: €1,581 EUR|Low: €238 EUR|High: €1,581 EUR|Avg: €649 EUR
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 12
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Retailer 20
October 30, 2026
Retailer 20€248 EUR
Retailer 10€277 EUR
Retailer 19€288 EUR
Retailer 12€307 EUR
Retailer 18€307 EUR
Retailer 6€433 EUR
Retailer 16€436 EUR
Retailer 13€506 EUR
Retailer 15€528 EUR
Retailer 2€539 EUR
Retailer 7€599 EUR
Retailer 5€614 EUR
Retailer 8€683 EUR
Retailer 3€943 EUR
Retailer 17€987 EUR
Retailer 9€1,033 EUR
Retailer 14€1,238 EUR
Retailer 11€1,289 EUR
Retailer 4€1,379 EUR
Brilliant Earth€1,581 EUR

37 data points across 20 retailers

20 retailers€248 EUR to €1,581 EUR

A
Cheapest Retailer
-
€248 EUR
$276 USD
A
Retailer 2
-
€277 EUR
$308 USD
View
Final sale: no returns
A
Retailer 3
-
€288 EUR
$320 USD
View
A
Retailer 4
-
€307 EUR
$342 USD
View
Retailer 5
-
€307 EUR
$342 USD
View
Price last confirmed 18 days ago
A
Retailer 6
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€433 EUR
$482 USD
View
A
Retailer 7
-
€436 EUR
$485 USD
View
A
Retailer 8
-
€506 EUR
View
A
Retailer 9
-
€528 EUR
ZAR 9,490 ZAR
View
A
Retailer 10
-
€539 EUR
£473 GBP
View
B+
Retailer 11
-
€599 EUR
$667 USD
View
B+
Retailer 12
-
€614 EUR
$683 USD
View
B+
Retailer 13
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€683 EUR
$760 USD
View
B
Retailer 14
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€943 EUR
$1,050 USD
View
B+
Retailer 15
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€987 EUR
$1,099 USD
View
B
Retailer 16
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€1,033 EUR
$1,150 USD
View
B+
Retailer 17
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€1,238 EUR
£1,085 GBP
View
B
Retailer 18
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€1,289 EUR
$1,435 USD
View
Retailer 19
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€1,379 EUR
$1,535 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21018332A · Oct 29
€1,581 EUR
$1,760 USD
View
19 more retailers have this diamond
Prices start from €248 EURSave up to €1,333 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
€248 EUR