Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

EX • D/IF • IGI LG839608224

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839608224

Diamond specifications and retailer prices

From $245 USD
As of October 29, 2026
Save $1,415 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,660 USD at Brilliant Earth · As of October 30, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839608224 or 839608224. Listed at 15 retailers as of October 29, 2026, with prices from $245 to $1,660, a $1,415 spread on the same certified stone. Brilliant Earth lists it at $1,660. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839608224
Dimensions6.83 × 6.80 × 4.13 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
6.83 mm6.80 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839608224
Side View
Table 58.0%Crown 33.2°Girdle: Slightly ThickPavilion 40.4°Culet: NoneDepth 60.6%

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 29
Current: $1,660 USD|Low: $236 USD|High: $1,830 USD|Avg: $740 USD|-9.3%
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
October 30, 2026
Retailer 14$245 USD
Retailer 5$274 USD
Retailer 3$304 USD
Retailer 7$410 USD
Retailer 8$484 USD
Retailer 12$523 USD
Retailer 10$548 USD
Retailer 9$576 USD
Retailer 4$698 USD
Retailer 13$742 USD
Retailer 2$768 USD
Retailer 6$1,030 USD
Retailer 11$1,226 USD
Retailer 15$1,339 USD
Brilliant Earth$1,660 USD

30 data points across 15 retailers

15 retailers$245 USD to $1,660 USD

A
Cheapest Retailer
-
$245 USD
A
Retailer 2
-
$274 USD
View
Final sale: no returns
A
Retailer 3
-
$304 USD
View
A
Retailer 4
-
$410 USD
View
A
Retailer 5
-
$484 USD
£381 GBP
View
A
Retailer 6
-
$523 USD
ZAR 8,447 ZAR
View
A
Retailer 7
-
$548 USD
€522 EUR
View
A
Retailer 8
-
$576 USD
£454 GBP
View
B+
Retailer 9
-
$698 USD
View
B+
Retailer 10
-
$742 USD
A$1,142 AUD
View
B+
Retailer 11
-
$768 USD
View
B
Retailer 12
-
$1,030 USD
View
B+
Retailer 13
-
$1,226 USD
£965 GBP
View
B
Retailer 14
-
$1,339 USD
View
Most Expensive
B
Brilliant Earth
21662127A · Oct 30
$1,660 USD
View
14 more retailers have this diamond
Prices start from $245 USDSave up to $1,415 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
$245 USD