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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 $575 NZD
As of November 3, 2026
Save $3,754 NZD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,329 NZD at Brilliant Earth · As of November 4, 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 3, 2026, with prices from $575 to $4,329, a $3,754 spread on the same certified stone. Brilliant Earth lists it at $4,329. 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 3
Current: $4,329 NZD|Low: $557 NZD|High: $4,329 NZD|Avg: $1,747 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
Retailer 14
Retailer 15
November 5, 2026
Retailer 15$575 NZD
Retailer 7$644 NZD
Retailer 4$713 NZD
Retailer 3$958 NZD
Retailer 12$1,130 NZD
Retailer 13$1,229 NZD
Retailer 9$1,235 NZD
Retailer 6$1,288 NZD
Retailer 14$1,735 NZD
Retailer 10$1,753 NZD
Retailer 11$2,235 NZD
Retailer 2$2,280 NZD
Retailer 8$2,801 NZD
Retailer 5$2,819 NZD
Brilliant Earth$4,329 NZD

40 data points across 15 retailers

19 retailers$575 NZD to $4,329 NZD

A
Cheapest Retailer
-
$575 NZD
Retailer 2
-
$580 NZD
View
Price last confirmed 43 days ago
A
Retailer 3
-
$644 NZD
View
Final sale: no returns
Retailer 4
-
$672 NZD
View
Price last confirmed 44 days ago
Retailer 5
-
$710 NZD
View
Price last confirmed 41 days ago
Retailer 6
-
$713 NZD
View
Price last confirmed 11 days ago
A
Retailer 7
-
$958 NZD
View
A
Retailer 8
-
$1,130 NZD
View
B+
Retailer 9
-
$1,229 NZD
View
B+
Retailer 10
-
$1,235 NZD
View
B+
Retailer 11
-
$1,288 NZD
View
B+
Retailer 12
-
$1,735 NZD
View
B+
Retailer 13
-
$1,753 NZD
View
B+
Retailer 14
-
$2,235 NZD
View
B
Retailer 15
-
$2,280 NZD
View
Retailer 16
-
$2,312 NZD
View
Price last confirmed 41 days ago
B
Retailer 17
-
$2,801 NZD
View
B
Retailer 18
-
$2,819 NZD
View
Most Expensive
B
Brilliant Earth
21659255A · Nov 4
$4,329 NZD
$2,440 USD
View
18 more retailers have this diamond
Prices start from $575 NZDSave up to $3,754 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
$575 NZD