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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 $392 AUD
$275 USD
As of November 2, 2026
Save $3,158 AUD (89%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,550 AUD 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 $392 to $3,550, a $3,158 spread on the same certified stone. Helzberg Diamonds lists it at $3,550. 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: $3,550 AUD|Low: $392 AUD|High: $3,917 AUD|Avg: $1,385 AUD|-9.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$392 AUD
Retailer 7$467 AUD
Retailer 4$498 AUD
Retailer 6$498 AUD
Retailer 3$859 AUD
Retailer 5$1,602 AUD
Helzberg Diamonds$3,550 AUD

12 data points across 7 retailers

7 retailers$392 AUD to $3,550 AUD

A
Cheapest Retailer
-
$392 AUD
$275 USD
A
Retailer 2
-
$467 AUD
$327 USD
View
Retailer 3
-
$498 AUD
$349 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$498 AUD
$349 USD
View
A
Retailer 5
-
$859 AUD
$602 USD
View
B+
Retailer 6
-
$1,602 AUD
$1,123 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOILMMHJOK · Nov 1
$3,550 AUD
$2,488 USD
View
6 more retailers have this diamond
Prices start from $392 AUDSave up to $3,158 AUD

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
$392 AUD