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Radiant|Lab Grown|IGI

2.57ct D FL Radiant Lab Grown Diamond

D/FL

Diamond specifications and retailer prices

From $1,914 NZD
$1,079 USD
As of October 30, 2026
Save $8,932 NZD (82%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $10,846 NZD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless) and certified by IGI. Listed at 5 retailers as of October 30, 2026, with prices from $1,914 to $10,846, a $8,932 spread on the same certified stone. Helzberg Diamonds lists it at $10,846. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.57
Carat
D
Colour
FL
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions9.13 × 6.75 × 4.81 mm
L/W Ratio1.35
Top View
9.13 mm6.75 mm2.57 ctD / FL
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: MediumPavilionCuletDepth 71.3%

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: Oct 30
Current: $10,846 NZD|Low: $1,914 NZD|High: $18,442 NZD|Avg: $5,955 NZD|-41.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 22, 2026
Retailer 3$1,914 NZD
Retailer 2$2,083 NZD
Retailer 4$2,220 NZD
Retailer 5$4,163 NZD
Helzberg Diamonds$10,846 NZD

11 data points across 5 retailers

5 retailers$1,914 NZD to $10,846 NZD

A
Cheapest Retailer
-
$1,914 NZD
$1,079 USD
B+
Retailer 2
-
$2,083 NZD
$1,174 USD
View
A
Retailer 3
-
$2,220 NZD
$1,251 USD
View
B+
Retailer 4
-
$4,163 NZD
$2,346 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZNPPMKJMLO · Oct 31
$10,846 NZD
$6,113 USD
View
4 more retailers have this diamond
Prices start from $1,914 NZDSave up to $8,932 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
2.57ct Radiant
$1,914 NZD