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Radiant|Lab Grown|IGI

1.33ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG689516105

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

Certificate IGI LG689516105

Diamond specifications and retailer prices

From $648 NZD
As of November 4, 2026
Save $2,187 NZD (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,386 NZD at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 1.33ct lab-grown radiant diamond

This 1.33ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG689516105 or 689516105. Listed at 14 retailers as of November 4, 2026, with a 338% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.33
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689516105
Dimensions6.56 × 6.23 × 3.88 mm
L/W Ratio1.05
Culet sizePointed
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
6.56 mm6.23 mm1.33 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689516105
Side View
Table 58.0%Crown 37.8°Girdle: MediumPavilion 34.9°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $6,386 NZD|Low: $648 NZD|High: $6,386 NZD|Avg: $1,897 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
Retailer 16
Retailer 17
November 4, 2026
Retailer 4$648 NZD
Retailer 8$667 NZD
Retailer 17$718 NZD
Retailer 2$738 NZD
Retailer 12$967 NZD
Retailer 10$993 NZD
Retailer 3$1,162 NZD
Retailer 16$1,169 NZD
Retailer 11$1,238 NZD
Retailer 15$1,719 NZD
Retailer 7$1,905 NZD
Retailer 5$2,388 NZD
Retailer 9$2,704 NZD
Retailer 6$2,835 NZD
Retailer 14$2,893 NZD
Retailer 13$3,335 NZD
Brilliant Earth$6,386 NZD

33 data points across 17 retailers

14 retailers$648 NZD to $2,835 NZD

A
Cheapest Retailer
-
$648 NZD
Final sale: no returns
Retailer 2
-
$718 NZD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$738 NZD
View
A
Retailer 4
-
$967 NZD
View
A
Retailer 5
-
$993 NZD
View
A
Retailer 6
-
$1,162 NZD
View
A
Retailer 7
-
$1,238 NZD
View
B+
Retailer 8
-
$1,719 NZD
View
B
Retailer 9
-
$2,388 NZD
View
B
Retailer 10
-
$2,835 NZD
View
Retailer 11
-
$2,893 NZD
View
Price last confirmed 17 days ago
Retailer 12
-
$3,335 NZD
View
Price last confirmed 18 days ago
Retailer 13
-
$3,445 NZD
View
Price last confirmed 88 days ago
Most Expensive
Brilliant Earth
21386154A · Oct 8
$6,386 NZD
$3,600 USD
View
Price last confirmed 27 days ago
13 more retailers have this diamond
Prices start from $648 NZDSave up to $2,187 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
1.33ct Radiant
$648 NZD