Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG838654059

Shape and cutting style on the report: Round brilliant

Certificate IGI LG838654059

Diamond specifications and retailer prices

From $324 USD
As of October 29, 2026
Save $2,116 USD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,440 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG838654059 or 838654059. Listed at 19 retailers as of October 29, 2026, with prices from $324 to $2,440, a $2,116 spread on the same certified stone. Brilliant Earth lists it at $2,440. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838654059
Dimensions6.81 × 6.87 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.87 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838654059
Side View
Table 58.0%Crown 35.9°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 61.3%

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: $2,440 USD|Low: $314 USD|High: $2,440 USD|Avg: $947 USD
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 31, 2026
Retailer 12$324 USD
Retailer 5$363 USD
Retailer 14$402 USD
Retailer 13$540 USD
Retailer 9$636 USD
Retailer 11$691 USD
Retailer 2$716 USD
Retailer 3$726 USD
Retailer 10$976 USD
Retailer 8$978 USD
Retailer 4$1,308 USD
Retailer 6$1,390 USD
Retailer 15$1,590 USD
Retailer 7$1,633 USD
Brilliant Earth$2,440 USD

36 data points across 15 retailers

19 retailers$324 USD to $2,440 USD

A
Cheapest Retailer
-
$324 USD
Retailer 2
-
$327 USD
View
Price last confirmed 38 days ago
A
Retailer 3
-
$363 USD
View
Final sale: no returns
Retailer 4
-
$379 USD
View
Price last confirmed 39 days ago
Retailer 5
-
$400 USD
View
Price last confirmed 36 days ago
A
Retailer 6
-
$402 USD
View
A
Retailer 7
-
$540 USD
View
A
Retailer 8
-
$636 USD
€606 EUR
View
B+
Retailer 9
-
$691 USD
ZAR 11,159 ZAR
View
B+
Retailer 10
-
$716 USD
£564 GBP
View
B+
Retailer 11
-
$726 USD
View
B+
Retailer 12
-
$976 USD
A$1,502 AUD
View
B+
Retailer 13
-
$978 USD
View
Retailer 14
-
$1,303 USD
View
Price last confirmed 35 days ago
B
Retailer 15
-
$1,308 USD
SGD 1,768 SGD
View
Retailer 16
-
$1,390 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$1,590 USD
View
Retailer 18
-
$1,633 USD
£1,286 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21659255A · Oct 29
$2,440 USD
View
18 more retailers have this diamond
Prices start from $324 USDSave up to $2,116 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
$324 USD