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Round|Lab Grown|IGI

1.20ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811638228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811638228

Diamond specifications and retailer prices

From $504 NZD
As of November 4, 2026
Save $2,636 NZD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,140 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638228 or 811638228. Listed at 21 retailers as of November 4, 2026, with prices from $504 to $3,140, a $2,636 spread on the same certified stone. Brilliant Earth lists it at $3,140. 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 angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638228
Dimensions6.82 × 6.79 × 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
6.82 mm6.79 mm1.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638228
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
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: $3,140 NZD|Low: $451 NZD|High: $3,690 NZD|Avg: $1,368 NZD|-14.9%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 5, 2026
Retailer 8$468 NZD
Retailer 20$504 NZD
Retailer 12$545 NZD
Retailer 9$582 NZD
Retailer 10$582 NZD
Retailer 16$843 NZD
Retailer 13$885 NZD
Retailer 14$937 NZD
Retailer 4$942 NZD
Retailer 5$972 NZD
Retailer 2$1,054 NZD
Retailer 17$1,244 NZD
Retailer 18$1,719 NZD
Retailer 7$1,825 NZD
Retailer 11$1,870 NZD
Retailer 19$1,889 NZD
Retailer 6$1,996 NZD
Retailer 3$2,242 NZD
Retailer 15$2,528 NZD
Brilliant Earth$3,140 NZD

38 data points across 20 retailers

21 retailers$504 NZD to $3,140 NZD

Retailer 1
-
$468 NZD
Price last confirmed 26 days ago
A
Retailer 2
-
$504 NZD
View
Final sale: no returns
Retailer 3
-
$545 NZD
View
Price last confirmed 30 days ago
Retailer 4
-
$575 NZD
View
Price last confirmed 59 days ago
Retailer 5
-
$582 NZD
View
Price last confirmed 29 days ago
Retailer 6
-
$582 NZD
View
Price last confirmed 28 days ago
A
Retailer 7
-
$843 NZD
View
A
Retailer 8
-
$885 NZD
View
A
Retailer 9
-
$937 NZD
View
A
Retailer 10
-
$942 NZD
View
A
Retailer 11
-
$972 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
-
$1,825 NZD
View
Retailer 16
-
$1,870 NZD
View
Price last confirmed 30 days ago
B+
Retailer 17
-
$1,889 NZD
View
B+
Retailer 18
-
$1,996 NZD
View
B+
Retailer 19
-
$2,242 NZD
View
B+
Retailer 20
-
$2,528 NZD
View
Most Expensive
B
Brilliant Earth
21422065A · Nov 4
$3,140 NZD
$1,770 USD
View
20 more retailers have this diamond
Prices start from $504 NZDSave up to $2,636 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
$504 NZD