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Round|Lab Grown|IGI

1.09ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800678455

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800678455

Diamond specifications and retailer prices

From $428 USD
As of October 29, 2026
Save $956 USD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,384 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct 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 LG800678455 or 800678455. Listed at 13 retailers as of October 29, 2026, with prices from $428 to $1,384, a $956 spread on the same certified stone. MOH London lists it at $1,384. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800678455
Dimensions6.67 × 6.64 × 4.04 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
6.67 mm6.64 mm1.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800678455
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.7%

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: $1,384 USD|Low: $420 USD|High: $1,570 USD|Avg: $832 USD|-4.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 13$428 USD
Retailer 10$474 USD
Retailer 4$485 USD
Retailer 11$558 USD
Retailer 7$570 USD
Retailer 8$590 USD
Retailer 6$603 USD
Retailer 5$707 USD
Retailer 12$767 USD
Retailer 9$1,065 USD
Retailer 3$1,271 USD
Retailer 2$1,330 USD
MOH London$1,384 USD

41 data points across 13 retailers

13 retailers$428 USD to $1,384 USD

A
Cheapest Retailer
-
$428 USD
A
Retailer 2
-
$474 USD
HK$3,700 HKD
View
A
Retailer 3
-
$485 USD
View
A
Retailer 4
-
$558 USD
View
A
Retailer 5
-
$570 USD
€543 EUR
View
A
Retailer 6
-
$590 USD
ZAR 9,537 ZAR
View
A
Retailer 7
-
$603 USD
£475 GBP
View
B+
Retailer 8
-
$707 USD
A$1,088 AUD
View
B+
Retailer 9
-
$767 USD
View
B
Retailer 10
-
$1,065 USD
View
B
Retailer 11
-
$1,271 USD
View
B
Retailer 12
-
$1,330 USD
View
Most Expensive
B
MOH London
LG800678455 · Oct 29
$1,384 USD
£1,090 GBP
View
12 more retailers have this diamond
Prices start from $428 USDSave up to $956 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
1.09ct Round
$428 USD