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 $938 USD
As of October 29, 2026
Save $2,120 USD (69%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,448 USD at With Clarity · As of October 28, 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
Color
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: $1,665 USD|Low: $1,050 USD|High: $3,739 USD|Avg: $2,231 USD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 2$1,050 USD
Retailer 7$1,265 USD
Retailer 1$1,665 USD
Retailer 5$1,707 USD
Retailer 4$1,888 USD
Retailer 3$1,999 USD
Retailer 9$2,210 USD
Retailer 6$2,780 USD
Retailer 10$3,653 USD
Retailer 8$3,694 USD

40 data points across 10 retailers

20 retailers$938 USD to $3,058 USD

B+
Cheapest Retailer
-
$938 USD
B+
Retailer 2
-
$1,020 USD
View
B+
Retailer 3
-
$1,050 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,088 USD
View
B+
Retailer 5
-
$1,088 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$1,265 USD
View
B+
Retailer 7
-
$1,267 USD
HK$9,900 HKD
View
B
Retailer 8
-
$1,558 USD
View
B
Retailer 9
-
$1,665 USD
£1,311 GBP
View
B
Retailer 10
-
$1,707 USD
€1,626 EUR
View
B
Retailer 11
-
$1,888 USD
£1,486 GBP
View
B
Retailer 12
-
$1,999 USD
ZAR 32,301 ZAR
View
B
Retailer 13
-
$2,210 USD
View
B
Retailer 14
-
$2,780 USD
View
B
Retailer 15
-
$3,058 USD
View
B
Retailer 16
-
$3,548 USD
View
Price under review
B
Retailer 17
-
$3,653 USD
SGD 4,936 SGD
View
Price under review
B
Retailer 18
-
$3,694 USD
£2,909 GBP
View
Price under review
B
Retailer 19
-
$3,784 USD
View
Price under review
Most Expensive
B
With Clarity
818644345 · Oct 28
$4,448 USD
View
Price under review
19 more retailers have this diamond
Prices start from $938 USDSave up to $2,120 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.

B+
1.23ct Round
$938 USD