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Round|Lab Grown|IGI

1.23ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG778645544

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645544

Diamond specifications and retailer prices

From €251 EUR
$280 USD
As of October 30, 2026
Save €1,796 EUR (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,130 EUR at Brilliant Earth · As of October 21, 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 LG778645544 or 778645544. Listed at 23 retailers as of October 27, 2026, with a 716% 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
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645544
Dimensions6.97 × 6.99 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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 mm6.99 mm1.23 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645544
Side View
Table 58.0%Crown 33.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €2,130 EUR|Low: €178 EUR|High: €2,130 EUR|Avg: €668 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 16€251 EUR
Retailer 6€275 EUR
Retailer 11€278 EUR
Retailer 20€309 EUR
Retailer 5€376 EUR
Retailer 2€421 EUR
Retailer 14€457 EUR
Retailer 17€478 EUR
Retailer 4€504 EUR
Retailer 13€529 EUR
Retailer 8€604 EUR
Retailer 18€678 EUR
Retailer 19€704 EUR
Retailer 12€900 EUR
Retailer 9€941 EUR
Retailer 3€975 EUR
Retailer 15€1,122 EUR
Retailer 7€1,137 EUR
Retailer 10€1,214 EUR
Brilliant Earth€2,130 EUR

25 data points across 20 retailers

23 retailers€251 EUR to €2,046 EUR

Retailer 1
-
€225 EUR
$251 USD
Price last confirmed 39 days ago
A
Retailer 2
-
€251 EUR
$280 USD
View
Final sale: no returns
Retailer 3
-
€260 EUR
$291 USD
View
Price last confirmed 40 days ago
Retailer 4
-
€275 EUR
$307 USD
View
Price last confirmed 40 days ago
A
Retailer 5
-
€309 EUR
HK$2,700 HKD
View
A
Retailer 6
-
€376 EUR
$420 USD
View
A
Retailer 7
-
€421 EUR
$470 USD
View
A
Retailer 8
-
€457 EUR
View
A
Retailer 9
-
€478 EUR
ZAR 8,633 ZAR
View
A
Retailer 10
-
€504 EUR
$563 USD
View
A
Retailer 11
-
€529 EUR
£465 GBP
View
B+
Retailer 12
-
€604 EUR
$675 USD
View
B+
Retailer 13
-
€678 EUR
A$1,165 AUD
View
B+
Retailer 14
-
€704 EUR
$787 USD
View
Retailer 15
-
€895 EUR
$1,000 USD
View
Price last confirmed 41 days ago
B+
Retailer 16
-
€900 EUR
SGD 1,359 SGD
View
B+
Retailer 17
-
€941 EUR
$1,052 USD
View
B+
Retailer 18
-
€975 EUR
$1,089 USD
View
B+
Retailer 19
-
€1,122 EUR
£987 GBP
View
Retailer 20
-
€1,137 EUR
$1,270 USD
View
Price last confirmed 52 days ago
B
Retailer 21
-
€1,214 EUR
$1,356 USD
View
B
Retailer 22
-
€2,046 EUR
£1,800 GBP
View
Most Expensive
Brilliant Earth
18359515A · Oct 21
€2,130 EUR
$2,380 USD
View
Price last confirmed 10 days ago
22 more retailers have this diamond
Prices start from €251 EURSave up to €1,796 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
€251 EUR