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Round|Lab Grown|IGI

1.20ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG840633315

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840633315

Diamond specifications and retailer prices

From $256 USD
As of October 29, 2026
Save $1,514 USD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,770 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840633315 or 840633315. Listed at 21 retailers as of October 29, 2026, with prices from $256 to $1,770, a $1,514 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 angle33.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633315
Dimensions6.85 × 6.90 × 4.15 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
6.85 mm6.90 mm1.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633315
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 41°Culet: NoneDepth 60.3%

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: $1,770 USD|Low: $256 USD|High: $2,080 USD|Avg: $755 USD|-14.9%
Brilliant Earth
Retailer 2
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Retailer 21
October 31, 2026
Retailer 9$256 USD
Retailer 10$287 USD
Retailer 5$297 USD
Retailer 3$318 USD
Retailer 12$318 USD
Retailer 2$480 USD
Retailer 13$506 USD
Retailer 16$530 USD
Retailer 6$531 USD
Retailer 17$546 USD
Retailer 7$568 USD
Retailer 15$605 USD
Retailer 8$702 USD
Retailer 4$976 USD
Retailer 14$1,022 USD
Retailer 19$1,029 USD
Retailer 11$1,073 USD
Retailer 18$1,125 USD
Retailer 20$1,280 USD
Retailer 21$1,495 USD
Brilliant Earth$1,770 USD

23 data points across 21 retailers

21 retailers$256 USD to $1,770 USD

A
Cheapest Retailer
-
$256 USD
A
Retailer 2
-
$287 USD
View
Final sale: no returns
A
Retailer 3
-
$297 USD
View
A
Retailer 4
-
$318 USD
View
A
Retailer 5
-
$318 USD
View
A
Retailer 6
-
$480 USD
View
A
Retailer 7
-
$506 USD
£398 GBP
View
A
Retailer 8
-
$530 USD
€505 EUR
View
A
Retailer 9
-
$531 USD
View
A
Retailer 10
-
$546 USD
ZAR 8,820 ZAR
View
A
Retailer 11
-
$568 USD
View
A
Retailer 12
-
$605 USD
£476 GBP
View
B+
Retailer 13
-
$702 USD
View
B+
Retailer 14
-
$976 USD
View
B+
Retailer 15
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$1,022 USD
View
B+
Retailer 16
-
$1,029 USD
SGD 1,391 SGD
View
B+
Retailer 17
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$1,073 USD
View
B+
Retailer 18
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$1,125 USD
View
B+
Retailer 19
-
$1,280 USD
£1,008 GBP
View
Retailer 20
-
$1,495 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21728993A · Oct 29
$1,770 USD
View
20 more retailers have this diamond
Prices start from $256 USDSave up to $1,514 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
$256 USD