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Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG845656939

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845656939

Diamond specifications and retailer prices

From $400 AUD
$280 USD
As of November 1, 2026
Save $1,712 AUD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,112 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 LG845656939 or 845656939. Listed at 14 retailers as of November 1, 2026, with prices from $400 to $2,112, a $1,712 spread on the same certified stone. Brilliant Earth lists it at $2,112. 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 angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845656939
Dimensions6.77 × 6.80 × 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
6.77 mm6.80 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845656939
Side View
Table 57.0%Crown 35.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,112 AUD|Low: $400 AUD|High: $2,112 AUD|Avg: $929 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
November 3, 2026
Retailer 12$400 AUD
Retailer 5$493 AUD
Retailer 13$599 AUD
Retailer 9$671 AUD
Retailer 7$704 AUD
Retailer 11$736 AUD
Retailer 8$766 AUD
Retailer 2$843 AUD
Retailer 4$1,081 AUD
Retailer 10$1,364 AUD
Retailer 3$1,435 AUD
Retailer 6$1,780 AUD
Brilliant Earth$2,112 AUD

13 data points across 13 retailers

14 retailers$400 AUD to $2,112 AUD

A+
Cheapest Retailer
-
$400 AUD
$280 USD
Final sale: no returns
A
Retailer 2
-
$493 AUD
HK$2,700 HKD
View
A
Retailer 3
-
$599 AUD
$420 USD
View
A
Retailer 4
-
$671 AUD
$470 USD
View
A
Retailer 5
-
$704 AUD
£388 GBP
View
A
Retailer 6
-
$736 AUD
€491 EUR
View
A
Retailer 7
-
$766 AUD
ZAR 8,676 ZAR
View
A
Retailer 8
-
$843 AUD
£465 GBP
View
B+
Retailer 9
-
$1,081 AUD
View
B+
Retailer 10
-
$1,364 AUD
$956 USD
View
B+
Retailer 11
-
$1,435 AUD
SGD 1,359 SGD
View
B+
Retailer 12
-
$1,780 AUD
£982 GBP
View
B
Retailer 13
-
$1,926 AUD
$1,350 USD
View
Most Expensive
B
Brilliant Earth
22229693A · Nov 2
$2,112 AUD
$1,480 USD
View
13 more retailers have this diamond
Prices start from $400 AUDSave up to $1,712 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
$400 AUD