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Radiant|Lab Grown|IGI

1.31ct D FL Radiant Lab Grown Diamond

EX • D/FL

Diamond specifications and retailer prices

From $489 NZD
$275 USD
As of November 2, 2026
Save $3,933 NZD (89%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,422 NZD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI. Listed at 7 retailers as of November 1, 2026, with prices from $489 to $4,422, a $3,933 spread on the same certified stone. Helzberg Diamonds lists it at $4,422. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.53 × 5.46 × 3.78 mm
L/W Ratio1.38
Top View
7.53 mm5.46 mm1.31 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 63.0%CrownGirdle: MediumPavilionCulet: NoneDepth 69.2%

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 2
Current: $4,422 NZD|Low: $489 NZD|High: $4,879 NZD|Avg: $1,725 NZD|-9.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$489 NZD
Retailer 7$581 NZD
Retailer 4$620 NZD
Retailer 6$620 NZD
Retailer 3$1,070 NZD
Retailer 5$1,996 NZD
Helzberg Diamonds$4,422 NZD

12 data points across 7 retailers

7 retailers$489 NZD to $4,422 NZD

A
Cheapest Retailer
-
$489 NZD
$275 USD
A
Retailer 2
-
$581 NZD
$327 USD
View
Retailer 3
-
$620 NZD
$349 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$620 NZD
$349 USD
View
A
Retailer 5
-
$1,070 NZD
$602 USD
View
B+
Retailer 6
-
$1,996 NZD
$1,123 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOILMMHJOK · Nov 1
$4,422 NZD
$2,488 USD
View
6 more retailers have this diamond
Prices start from $489 NZDSave up to $3,933 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
1.31ct Radiant
$489 NZD