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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 $276 USD
As of October 29, 2026
Save $1,484 USD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,760 USD 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 $276 to $1,760, a $1,484 spread on the same certified stone. Brilliant Earth lists it at $1,760. 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
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,760 USD|Low: $265 USD|High: $1,760 USD|Avg: $719 USD
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 29, 2026
Retailer 20$276 USD
Retailer 10$308 USD
Retailer 19$320 USD
Retailer 12$342 USD
Retailer 18$342 USD
Retailer 6$482 USD
Retailer 16$485 USD
Retailer 13$563 USD
Retailer 15$587 USD
Retailer 2$598 USD
Retailer 7$667 USD
Retailer 5$683 USD
Retailer 8$760 USD
Retailer 3$1,050 USD
Retailer 17$1,099 USD
Retailer 9$1,150 USD
Retailer 14$1,378 USD
Retailer 11$1,435 USD
Retailer 4$1,535 USD
Brilliant Earth$1,760 USD

36 data points across 20 retailers

20 retailers$276 USD to $1,760 USD

A
Cheapest Retailer
-
$276 USD
A
Retailer 2
-
$308 USD
View
Final sale: no returns
A
Retailer 3
-
$320 USD
View
A
Retailer 4
-
$342 USD
View
Retailer 5
-
$342 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$482 USD
View
A
Retailer 7
-
$485 USD
View
A
Retailer 8
-
$563 USD
€536 EUR
View
A
Retailer 9
-
$587 USD
ZAR 9,490 ZAR
View
A
Retailer 10
-
$598 USD
£471 GBP
View
B+
Retailer 11
-
$667 USD
View
B+
Retailer 12
-
$683 USD
View
B+
Retailer 13
-
$760 USD
View
B
Retailer 14
-
$1,050 USD
View
B+
Retailer 15
-
$1,099 USD
View
B
Retailer 16
-
$1,150 USD
View
B+
Retailer 17
-
$1,378 USD
£1,085 GBP
View
B
Retailer 18
-
$1,435 USD
View
Retailer 19
-
$1,535 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21018332A · Oct 29
$1,760 USD
View
19 more retailers have this diamond
Prices start from $276 USDSave up to $1,484 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
$276 USD