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Radiant|Lab Grown|IGI

1.65ct D IF Radiant Lab Grown Diamond

D/IF

Diamond specifications and retailer prices

From $849 NZD
£377 GBP
As of November 1, 2026
Save $3,986 NZD (82%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,835 NZD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.65ct lab-grown radiant diamond

This 1.65ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless) and certified by IGI. Listed at 2 retailers as of October 31, 2026, with prices from $849 to $4,835, a $3,986 spread on the same certified stone. Helzberg Diamonds lists it at $4,835. 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

1.65
Carat
D
Colour
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.18 × 5.91 × 4.03 mm
L/W Ratio1.38
Top View
8.18 mm5.91 mm1.65 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 65.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $4,835 NZD|Low: $455 NZD|High: $4,835 NZD|Avg: $1,449 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8$455 NZD
Retailer 4$642 NZD
Retailer 5$745 NZD
Retailer 7$786 NZD
Retailer 6$795 NZD
Retailer 2$849 NZD
Retailer 3$2,559 NZD
Helzberg Diamonds$4,835 NZD

37 data points across 8 retailers

2 retailers$849 NZD to $4,835 NZD

A
Cheapest Retailer
-
$849 NZD
£377 GBP
Most Expensive
C
Helzberg Diamonds
ZXZNGNLLGJJO · Oct 31
$4,835 NZD
$2,725 USD
View
1 more retailer has this diamond
Prices start from $849 NZDSave up to $3,986 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
1.65ct Radiant
$849 NZD