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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 $462 AUD
$324 USD
As of November 1, 2026
Save $3,019 AUD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,482 AUD at Brilliant Earth · As of November 2, 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 November 1, 2026, with prices from $462 to $3,482, a $3,019 spread on the same certified stone. Brilliant Earth lists it at $3,482. 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
Colour
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

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: Nov 1
Current: $3,482 AUD|Low: $448 AUD|High: $3,482 AUD|Avg: $1,356 AUD
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
November 3, 2026
Retailer 13$462 AUD
Retailer 6$518 AUD
Retailer 15$574 AUD
Retailer 14$771 AUD
Retailer 8$909 AUD
Retailer 9$989 AUD
Retailer 2$1,014 AUD
Retailer 4$1,036 AUD
Retailer 12$1,393 AUD
Retailer 11$1,396 AUD
Retailer 5$1,867 AUD
Retailer 7$1,983 AUD
Retailer 3$2,269 AUD
Retailer 10$2,298 AUD
Brilliant Earth$3,482 AUD

39 data points across 15 retailers

19 retailers$462 AUD to $3,482 AUD

A
Cheapest Retailer
-
$462 AUD
$324 USD
Retailer 2
-
$467 AUD
$327 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
$518 AUD
$363 USD
View
Final sale: no returns
Retailer 4
-
$541 AUD
$379 USD
View
Price last confirmed 42 days ago
Retailer 5
-
$571 AUD
$400 USD
View
Price last confirmed 38 days ago
Retailer 6
-
$574 AUD
$402 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$771 AUD
$540 USD
View
A
Retailer 8
-
$909 AUD
€607 EUR
View
B+
Retailer 9
-
$989 AUD
ZAR 11,199 ZAR
View
B+
Retailer 10
-
$1,014 AUD
£559 GBP
View
B+
Retailer 11
-
$1,036 AUD
$726 USD
View
B+
Retailer 12
-
$1,393 AUD
View
B+
Retailer 13
-
$1,396 AUD
$978 USD
View
Retailer 14
-
$1,859 AUD
$1,303 USD
View
Price last confirmed 38 days ago
B
Retailer 15
-
$1,867 AUD
SGD 1,768 SGD
View
B
Retailer 16
-
$1,983 AUD
$1,390 USD
View
B
Retailer 17
-
$2,269 AUD
$1,590 USD
View
B+
Retailer 18
-
$2,298 AUD
£1,268 GBP
View
Most Expensive
B
Brilliant Earth
21659255A · Nov 2
$3,482 AUD
$2,440 USD
View
18 more retailers have this diamond
Prices start from $462 AUDSave up to $3,019 AUD

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
$462 AUD