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Round|Lab Grown|IGI

1.23ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG780612543

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780612543

Diamond specifications and retailer prices

From €207 EUR
$231 USD
As of October 30, 2026
Save €1,225 EUR (86%) vs most expensive(unlock to see where)
19 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 LG780612543 or 780612543. Listed at 19 retailers as of October 29, 2026, with prices from €207 to €1,432, a €1,225 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 angle34.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780612543
Dimensions6.90 × 6.95 × 4.22 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
6.90 mm6.95 mm1.23 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780612543
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.9%

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: €1,432 EUR|Low: €207 EUR|High: €1,432 EUR|Avg: €614 EUR
Brilliant Earth
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
Retailer 16
October 30, 2026
Retailer 6€207 EUR
Retailer 8€230 EUR
Retailer 16€324 EUR
Retailer 9€373 EUR
Retailer 11€389 EUR
Retailer 13€395 EUR
Retailer 10€422 EUR
Retailer 3€493 EUR
Retailer 14€563 EUR
Retailer 2€589 EUR
Retailer 4€591 EUR
Retailer 5€788 EUR
Retailer 12€928 EUR
Retailer 15€1,079 EUR
Retailer 7€1,090 EUR
Brilliant Earth€1,432 EUR

27 data points across 16 retailers

19 retailers€207 EUR to €1,432 EUR

Retailer 1
-
€185 EUR
$207 USD
Price last confirmed 21 days ago
A
Retailer 2
-
€207 EUR
$231 USD
View
Final sale: no returns
Retailer 3
-
€230 EUR
$257 USD
View
Price last confirmed 20 days ago
Retailer 4
-
€230 EUR
$257 USD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
€324 EUR
$362 USD
View
A
Retailer 6
-
€373 EUR
£328 GBP
View
A
Retailer 7
-
€389 EUR
View
A
Retailer 8
-
€395 EUR
ZAR 7,137 ZAR
View
A
Retailer 9
-
€422 EUR
£372 GBP
View
A
Retailer 10
-
€493 EUR
$550 USD
View
A
Retailer 11
-
€563 EUR
A$967 AUD
View
A
Retailer 12
-
€589 EUR
$658 USD
View
B+
Retailer 13
-
€591 EUR
$660 USD
View
Retailer 14
-
€740 EUR
$827 USD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
€788 EUR
$880 USD
View
B+
Retailer 16
-
€928 EUR
£816 GBP
View
Retailer 17
-
€1,079 EUR
$1,205 USD
View
Price last confirmed 14 days ago
B
Retailer 18
-
€1,090 EUR
$1,217 USD
View
Most Expensive
B
Brilliant Earth
21580984A · Oct 29
€1,432 EUR
$1,600 USD
View
18 more retailers have this diamond
Prices start from €207 EURSave up to €1,225 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
€207 EUR