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Round|Lab Grown|IGI

1.23ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG755529144

Shape and cutting style on the report: Round brilliant

Certificate IGI LG755529144

Diamond specifications and retailer prices

From $484 USD
€461 EUR
As of October 29, 2026
Save $705 USD (59%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,245 USD at Rare Carat · As of October 7, 2026
View at Rare Carat

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 LG755529144 or 755529144. Listed at 8 retailers as of October 29, 2026, with a 146% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG755529144
Dimensions6.85 × 6.81 × 4.27 mm
L/W Ratio1.01
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
6.85 mm6.81 mm1.23 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG755529144
Side View
Table 57.0%Crown 34.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.6%

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: $1,245 USD|Low: $471 USD|High: $1,273 USD|Avg: $746 USD|-2.2%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$484 USD
Retailer 8$497 USD
Retailer 6$535 USD
Retailer 2$561 USD
Retailer 7$670 USD
Retailer 3$1,008 USD
Retailer 5$1,189 USD
Rare Carat$1,245 USD

43 data points across 8 retailers

8 retailers$484 USD to $1,189 USD

A
Cheapest Retailer
-
$484 USD
€461 EUR
A
Retailer 2
-
$497 USD
View
A
Retailer 3
-
$535 USD
View
A
Retailer 4
-
$561 USD
£442 GBP
View
B+
Retailer 5
-
$670 USD
View
B+
Retailer 6
-
$1,008 USD
View
B
Retailer 7
-
$1,189 USD
£936 GBP
View
Most Expensive
Rare Carat
7P755529144 · Oct 7
$1,245 USD
View
Price last confirmed 22 days ago
7 more retailers have this diamond
Prices start from $484 USDSave up to $705 USD

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
$484 USD