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Radiant|Lab Grown|IGI

1.74ct E IF Radiant Lab Grown Diamond

E/IF

Diamond specifications and retailer prices

From $609 NZD
$342 USD
As of October 28, 2026
Save $4,243 NZD (87%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,852 NZD at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1.74ct lab-grown radiant diamond

This 1.74ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless) and certified by IGI. Listed at 3 retailers as of October 28, 2026, with prices from $609 to $4,852, a $4,243 spread on the same certified stone. Helzberg Diamonds lists it at $4,852. 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

1.74
Carat
E
Colour
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.22 × 5.92 × 4.07 mm
L/W Ratio1.39
Top View
8.22 mm5.92 mm1.74 ctE / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 64.0%CrownGirdle: MediumPavilionCuletDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $4,852 NZD|Low: $525 NZD|High: $5,354 NZD|Avg: $2,011 NZD|-9.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 14, 2026
Retailer 4$525 NZD
Retailer 2$609 NZD
Retailer 3$652 NZD
Retailer 5$652 NZD
Retailer 6$2,094 NZD
Helzberg Diamonds$4,852 NZD

10 data points across 6 retailers

3 retailers$609 NZD to $4,852 NZD

B+
Cheapest Retailer
-
$609 NZD
$342 USD
B+
Retailer 2
-
$2,094 NZD
$1,176 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZOHOMLKILK · Oct 29
$4,852 NZD
$2,725 USD
View
2 more retailers have this diamond
Prices start from $609 NZDSave up to $4,243 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.

B+
1.74ct Radiant
$609 NZD