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Round|Lab Grown|IGI

1.20ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG840635065

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840635065

Diamond specifications and retailer prices

From $451 NZD
As of November 3, 2026
Save $3,475 NZD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,926 NZD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840635065 or 840635065. Listed at 22 retailers as of November 3, 2026, with prices from $451 to $3,926, a $3,475 spread on the same certified stone. Helzberg Diamonds lists it at $3,926. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635065
Dimensions6.78 × 6.87 × 4.21 mm
L/W Ratio1.01
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
6.78 mm6.87 mm1.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635065
Side View
Table 57.0%Crown 33.9°Girdle: MediumPavilion 41°Culet: NoneDepth 61.7%

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: $3,926 NZD|Low: $451 NZD|High: $3,926 NZD|Avg: $1,486 NZD
Helzberg Diamonds
Retailer 2
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November 5, 2026
Retailer 22$451 NZD
Retailer 17$506 NZD
Retailer 6$523 NZD
Retailer 7$561 NZD
Retailer 10$564 NZD
Retailer 20$843 NZD
Retailer 16$885 NZD
Retailer 18$937 NZD
Retailer 8$942 NZD
Retailer 9$972 NZD
Retailer 14$1,008 NZD
Retailer 2$1,054 NZD
Retailer 21$1,244 NZD
Retailer 3$1,719 NZD
Retailer 5$1,799 NZD
Retailer 12$1,825 NZD
Retailer 4$1,889 NZD
Retailer 11$1,996 NZD
Retailer 13$2,237 NZD
Retailer 19$2,528 NZD
Retailer 15$3,140 NZD
Helzberg Diamonds$3,926 NZD

21 data points across 22 retailers

22 retailers$451 NZD to $3,926 NZD

A
Cheapest Retailer
-
$451 NZD
A
Retailer 2
-
$506 NZD
View
Final sale: no returns
A
Retailer 3
-
$523 NZD
View
A
Retailer 4
-
$561 NZD
View
Retailer 5
-
$564 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$843 NZD
View
A
Retailer 7
-
$885 NZD
View
A
Retailer 8
-
$937 NZD
View
A
Retailer 9
-
$942 NZD
View
A
Retailer 10
-
$972 NZD
View
A
Retailer 11
-
$1,008 NZD
View
A
Retailer 12
-
$1,054 NZD
View
B+
Retailer 13
-
$1,244 NZD
View
B+
Retailer 14
-
$1,719 NZD
View
B+
Retailer 15
-
$1,799 NZD
View
B+
Retailer 16
-
$1,825 NZD
View
B+
Retailer 17
-
$1,889 NZD
View
B+
Retailer 18
-
$1,996 NZD
View
B+
Retailer 19
-
$2,237 NZD
View
B
Retailer 20
-
$2,528 NZD
View
B
Retailer 21
-
$3,140 NZD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJLGML · Nov 4
$3,926 NZD
$2,213 USD
View
21 more retailers have this diamond
Prices start from $451 NZDSave up to $3,475 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
$451 NZD