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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 $497 NZD
As of November 4, 2026
Save $2,129 NZD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,626 NZD at Brilliant Earth · As of November 3, 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 3, 2026, with prices from $497 to $2,626, a $2,129 spread on the same certified stone. Brilliant Earth lists it at $2,626. 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 4
Current: $2,626 NZD|Low: $497 NZD|High: $2,626 NZD|Avg: $1,170 NZD
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 5, 2026
Retailer 3$497 NZD
Retailer 5$612 NZD
Retailer 11$834 NZD
Retailer 6$873 NZD
Retailer 13$914 NZD
Retailer 7$926 NZD
Retailer 10$953 NZD
Retailer 2$1,036 NZD
Retailer 8$1,350 NZD
Retailer 12$1,696 NZD
Retailer 4$1,783 NZD
Retailer 9$2,212 NZD
Brilliant Earth$2,626 NZD

15 data points across 13 retailers

14 retailers$497 NZD to $2,626 NZD

A+
Cheapest Retailer
-
$497 NZD
Final sale: no returns
A
Retailer 2
-
$612 NZD
View
A
Retailer 3
-
$834 NZD
View
A
Retailer 4
-
$873 NZD
View
A
Retailer 5
-
$914 NZD
View
A
Retailer 6
-
$926 NZD
View
A
Retailer 7
-
$953 NZD
View
A
Retailer 8
-
$1,036 NZD
View
B+
Retailer 9
-
$1,350 NZD
View
B+
Retailer 10
-
$1,696 NZD
View
B+
Retailer 11
-
$1,783 NZD
View
B+
Retailer 12
-
$2,212 NZD
View
B
Retailer 13
-
$2,395 NZD
View
Most Expensive
B
Brilliant Earth
22229693A · Nov 3
$2,626 NZD
$1,480 USD
View
13 more retailers have this diamond
Prices start from $497 NZDSave up to $2,129 NZD

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
$497 NZD