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Round|Lab Grown|IGI

1.23ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG818644345

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644345

Diamond specifications and retailer prices

From €840 EUR
$938 USD
As of October 29, 2026
Save €1,898 EUR (69%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €3,981 EUR at With Clarity · As of October 30, 2026
View at With Clarity

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 LG818644345 or 818644345. Listed at 20 retailers as of October 27, 2026, with a 226% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644345
Dimensions6.94 × 6.95 × 4.17 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
6.94 mm6.95 mm1.23 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644345
Side View
Table 60.0%Crown 33°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €1,685 EUR|Low: €1,132 EUR|High: €3,347 EUR|Avg: €2,143 EUR|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6€1,132 EUR
Retailer 2€1,495 EUR
Retailer 4€1,528 EUR
Retailer 1€1,685 EUR
Retailer 3€1,790 EUR
Retailer 8€1,978 EUR
Retailer 5€2,488 EUR
Retailer 9€3,269 EUR
Retailer 7€3,307 EUR

39 data points across 9 retailers

20 retailers€840 EUR to €2,737 EUR

B+
Cheapest Retailer
-
€840 EUR
$938 USD
B+
Retailer 2
-
€913 EUR
$1,020 USD
View
B+
Retailer 3
-
€940 EUR
$1,050 USD
View
Final sale: no returns
B+
Retailer 4
-
€974 EUR
$1,088 USD
View
Retailer 5
-
€974 EUR
$1,088 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
€1,132 EUR
$1,265 USD
View
B+
Retailer 7
-
€1,134 EUR
HK$9,900 HKD
View
B
Retailer 8
-
€1,395 EUR
$1,558 USD
View
B
Retailer 9
-
€1,495 EUR
£1,315 GBP
View
B
Retailer 10
-
€1,528 EUR
View
B
Retailer 11
-
€1,685 EUR
£1,482 GBP
View
B
Retailer 12
-
€1,790 EUR
ZAR 32,301 ZAR
View
B
Retailer 13
-
€1,978 EUR
$2,210 USD
View
B
Retailer 14
-
€2,488 EUR
$2,780 USD
View
B
Retailer 15
-
€2,737 EUR
$3,058 USD
View
Retailer 16
-
€3,175 EUR
$3,548 USD
View
Price under review
Retailer 17
-
€3,269 EUR
SGD 4,936 SGD
View
Price under review
Retailer 18
-
€3,307 EUR
£2,909 GBP
View
Price under review
Retailer 19
-
€3,387 EUR
$3,784 USD
View
Price under review
Most Expensive
With Clarity
818644345 · Oct 30
€3,981 EUR
$4,448 USD
View
Price under review
19 more retailers have this diamond
Prices start from €840 EURSave up to €1,898 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.

B+
1.23ct Round
€840 EUR