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Round|Lab Grown|IGI

1.20ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG818659200

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818659200

Diamond specifications and retailer prices

From $254 USD
As of November 3, 2026
Save $1,516 USD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,770 USD at Brilliant Earth · As of November 4, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818659200 or 818659200. Listed at 20 retailers as of November 3, 2026, with prices from $254 to $1,770, a $1,516 spread on the same certified stone. Brilliant Earth lists it at $1,770. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818659200
Dimensions6.86 × 6.82 × 4.18 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
6.86 mm6.82 mm1.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818659200
Side View
Table 56.0%Crown 33.9°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 3
Current: $1,770 USD|Low: $254 USD|High: $2,080 USD|Avg: $786 USD|-14.9%
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
November 5, 2026
Retailer 18$254 USD
Retailer 4$284 USD
Retailer 6$295 USD
Retailer 7$316 USD
Retailer 11$318 USD
Retailer 15$475 USD
Retailer 13$528 USD
Retailer 16$530 USD
Retailer 8$548 USD
Retailer 2$594 USD
Retailer 17$701 USD
Retailer 19$969 USD
Retailer 5$1,014 USD
Retailer 10$1,029 USD
Retailer 3$1,065 USD
Retailer 9$1,125 USD
Retailer 12$1,261 USD
Retailer 14$1,425 USD
Brilliant Earth$1,770 USD

30 data points across 19 retailers

20 retailers$254 USD to $1,770 USD

A+
Cheapest Retailer
-
$254 USD
A
Retailer 2
-
$284 USD
View
Final sale: no returns
A
Retailer 3
-
$295 USD
View
A
Retailer 4
-
$316 USD
View
Retailer 5
-
$318 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$324 USD
View
Price last confirmed 59 days ago
A
Retailer 7
-
$475 USD
View
A
Retailer 8
-
$528 USD
View
A
Retailer 9
-
$530 USD
View
A
Retailer 10
-
$548 USD
View
A
Retailer 11
-
$594 USD
View
B+
Retailer 12
-
$701 USD
View
B+
Retailer 13
-
$969 USD
View
B+
Retailer 14
-
$1,014 USD
View
B+
Retailer 15
-
$1,029 USD
View
B+
Retailer 16
-
$1,065 USD
View
B+
Retailer 17
-
$1,125 USD
View
B+
Retailer 18
-
$1,261 USD
View
B+
Retailer 19
-
$1,425 USD
View
Most Expensive
B
Brilliant Earth
21421750A · Nov 4
$1,770 USD
View
19 more retailers have this diamond
Prices start from $254 USDSave up to $1,516 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
$254 USD