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Radiant|Lab Grown|GIA

1.72ct D IF Radiant Lab Grown Diamond

EX • D/IF

Diamond specifications and retailer prices

From $3,335 NZD
£1,480 GBP
As of November 1, 2026
Save $3,540 NZD (51%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $6,875 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.72ct lab-grown radiant diamond

This 1.72ct 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), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 31, 2026, with prices from $3,335 to $6,875, a $3,540 spread on the same certified stone. Blue Nile lists it at $6,875. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.72
Carat
D
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions7.97 × 5.93 × 4.11 mm
L/W Ratio1.34
Top View
7.97 mm5.93 mm1.72 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.4%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $6,875 NZD|Low: $2,317 NZD|High: $12,152 NZD|Avg: $3,977 NZD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5$2,317 NZD
Retailer 6$2,527 NZD
Retailer 4$2,651 NZD
Retailer 2$3,335 NZD
Retailer 7$4,273 NZD
Retailer 3$5,562 NZD
Blue Nile$6,875 NZD

41 data points across 7 retailers

2 retailers$3,335 NZD to $6,875 NZD

B+
Cheapest Retailer
-
$3,335 NZD
£1,480 GBP
Most Expensive
B
Blue Nile
21646856 · Oct 31
$6,875 NZD
$3,875 USD
View
1 more retailer has this diamond
Prices start from $3,335 NZDSave up to $3,540 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+
1.72ct Radiant
$3,335 NZD