Round|Lab Grown|IGI

1.20ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800678735

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800678735

Diamond specifications and retailer prices

From $509 USD
As of October 29, 2026
Save $1,191 USD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,700 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.2ct lab-grown round diamond

This 1.2ct 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 LG800678735 or 800678735. Listed at 14 retailers as of October 29, 2026, with prices from $509 to $1,700, a $1,191 spread on the same certified stone. Brilliant Earth lists it at $1,700. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800678735
Dimensions6.83 × 6.76 × 4.22 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
6.83 mm6.76 mm1.20 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800678735
Side View
Table 56.0%Crown 35.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.1%

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: $1,700 USD|Low: $458 USD|High: $1,760 USD|Avg: $973 USD|-3.4%
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
October 30, 2026
Retailer 14$509 USD
Retailer 11$512 USD
Retailer 4$530 USD
Retailer 12$589 USD
Retailer 8$616 USD
Retailer 9$644 USD
Retailer 2$664 USD
Retailer 5$727 USD
Retailer 13$845 USD
Retailer 3$1,369 USD
Retailer 10$1,485 USD
Retailer 7$1,510 USD
Retailer 6$1,518 USD
Brilliant Earth$1,700 USD

41 data points across 14 retailers

14 retailers$509 USD to $1,700 USD

A
Cheapest Retailer
-
$509 USD
A
Retailer 2
-
$512 USD
HK$4,000 HKD
View
A
Retailer 3
-
$530 USD
View
A
Retailer 4
-
$589 USD
View
A
Retailer 5
-
$616 USD
€587 EUR
View
A
Retailer 6
-
$644 USD
ZAR 10,402 ZAR
View
A
Retailer 7
-
$664 USD
£523 GBP
View
B+
Retailer 8
-
$727 USD
A$1,118 AUD
View
B+
Retailer 9
-
$845 USD
View
B
Retailer 10
-
$1,369 USD
View
Retailer 11
-
$1,485 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
$1,510 USD
£1,189 GBP
View
B
Retailer 13
-
$1,518 USD
View
Most Expensive
B
Brilliant Earth
20883885Y · Oct 29
$1,700 USD
View
13 more retailers have this diamond
Prices start from $509 USDSave up to $1,191 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
1.20ct Round
$509 USD