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Radiant|Lab Grown|IGI

1.18ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG811638307

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG811638307

Diamond specifications and retailer prices

From $557 NZD
£247 GBP
As of November 2, 2026
Save $3,887 NZD (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,443 NZD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.18ct lab-grown radiant diamond

This 1.18ct lab-grown radiant 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 LG811638307 or 811638307. Listed at 8 retailers as of November 1, 2026, with prices from $557 to $4,443, a $3,887 spread on the same certified stone. Rare Carat lists it at $4,443. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638307
Dimensions7.39 × 5.20 × 3.60 mm
L/W Ratio1.42
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
7.39 mm5.20 mm1.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638307
Side View
Table 63.0%Crown 44°Girdle: MediumPavilion 35.4°Culet: NoneDepth 69.2%

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 2
Current: $4,443 NZD|Low: $445 NZD|High: $5,403 NZD|Avg: $1,883 NZD|+9.9%
Rare Carat
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
November 2, 2026
Retailer 4$445 NZD
Retailer 7$503 NZD
Retailer 2$557 NZD
Retailer 16$782 NZD
Retailer 13$837 NZD
Retailer 5$1,273 NZD
Retailer 3$1,297 NZD
Retailer 15$1,369 NZD
Retailer 6$1,374 NZD
Retailer 12$1,580 NZD
Retailer 14$1,846 NZD
Retailer 9$2,167 NZD
Retailer 8$2,595 NZD
Retailer 10$3,288 NZD
Retailer 11$3,786 NZD
Rare Carat$4,443 NZD

21 data points across 16 retailers

8 retailers$557 NZD to $4,443 NZD

A+
Cheapest Retailer
-
$557 NZD
£247 GBP
A
Retailer 2
-
$837 NZD
$471 USD
View
B+
Retailer 3
-
$1,580 NZD
$889 USD
View
B+
Retailer 4
-
$1,846 NZD
$1,039 USD
View
B+
Retailer 5
-
$2,167 NZD
£960 GBP
View
B
Retailer 6
-
$3,288 NZD
$1,850 USD
View
B
Retailer 7
-
$3,786 NZD
$2,130 USD
View
Most Expensive
B
Rare Carat
PD-223068 · Nov 1
$4,443 NZD
$2,500 USD
View
7 more retailers have this diamond
Prices start from $557 NZDSave up to $3,887 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+
1.18ct Radiant
$557 NZD