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Round|Lab Grown|IGI

1.20ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811638228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811638228

Diamond specifications and retailer prices

From $287 USD
As of October 30, 2026
Save $1,483 USD (84%) 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 LG811638228 or 811638228. Listed at 21 retailers as of October 29, 2026, with prices from $287 to $1,770, a $1,483 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 angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638228
Dimensions6.82 × 6.79 × 4.23 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
6.82 mm6.79 mm1.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638228
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.1%

Caratlytics Score

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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 30
Current: $1,770 USD|Low: $254 USD|High: $2,080 USD|Avg: $753 USD|-14.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
Retailer 20
October 31, 2026
Retailer 8$264 USD
Retailer 4$287 USD
Retailer 12$307 USD
Retailer 9$328 USD
Retailer 10$328 USD
Retailer 2$480 USD
Retailer 5$507 USD
Retailer 14$530 USD
Retailer 6$531 USD
Retailer 16$546 USD
Retailer 13$605 USD
Retailer 20$702 USD
Retailer 19$976 USD
Retailer 18$1,029 USD
Retailer 11$1,054 USD
Retailer 7$1,073 USD
Retailer 17$1,125 USD
Retailer 15$1,280 USD
Retailer 3$1,495 USD
Brilliant Earth$1,770 USD

37 data points across 20 retailers

21 retailers$287 USD to $1,770 USD

Retailer 1
-
$264 USD
Price last confirmed 20 days ago
A
Retailer 2
-
$287 USD
View
Final sale: no returns
Retailer 3
-
$307 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$324 USD
View
Price last confirmed 54 days ago
Retailer 5
-
$328 USD
View
Price last confirmed 24 days ago
Retailer 6
-
$328 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
$480 USD
View
Retailer 8
-
$507 USD
£399 GBP
View
Price last confirmed 14 days ago
A
Retailer 9
-
$530 USD
€505 EUR
View
A
Retailer 10
-
$531 USD
View
A
Retailer 11
-
$546 USD
ZAR 8,820 ZAR
View
A
Retailer 12
-
$605 USD
£476 GBP
View
B+
Retailer 13
-
$702 USD
View
B+
Retailer 14
-
$976 USD
View
B+
Retailer 15
-
$1,029 USD
SGD 1,391 SGD
View
Retailer 16
-
$1,054 USD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$1,073 USD
View
B+
Retailer 18
-
$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
21422065A · Oct 29
$1,770 USD
View
20 more retailers have this diamond
Prices start from $287 USDSave up to $1,483 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
$287 USD