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Radiant|Lab Grown|IGI

3.21ct J VS2 Radiant Lab Grown Diamond

EX • J/VS2 • IGI LG508125948

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG508125948

Diamond specifications and retailer prices

From $3,523 NZD
As of November 6, 2026
Save $9,734 NZD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $17,336 NZD at Taylor and Hart · As of October 18, 2026
View at Taylor and Hart

About this 3.21ct lab-grown radiant diamond

This 3.21ct lab-grown radiant sits in the three to five carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508125948 or 508125948. Listed at 15 retailers as of November 5, 2026, with a 276% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.21
Carat
J
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508125948
Dimensions9.84 × 7.58 × 5.02 mm
L/W Ratio1.30
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.84 mm7.58 mm3.21 ctJ / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508125948
Side View
Table 70.0%Crown 38.3°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 66.2%

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: Nov 6
Current: $4,457 NZD|Low: $3,103 NZD|High: $26,680 NZD|Avg: $8,229 NZD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Taylor and Hart
November 7, 2026
Retailer 3$3,523 NZD
Retailer 8$3,842 NZD
Retailer 10$4,180 NZD
Retailer 14$4,344 NZD
Retailer 1$4,457 NZD
Retailer 2$4,719 NZD
Retailer 13$4,798 NZD
Retailer 4$6,355 NZD
Retailer 5$6,398 NZD
Retailer 7$6,763 NZD
Retailer 9$6,967 NZD
Retailer 12$7,051 NZD
Retailer 11$13,257 NZD
Taylor and Hart$17,336 NZD
Retailer 6$26,680 NZD

22 data points across 15 retailers

15 retailers$3,523 NZD to $13,257 NZD

B+
Cheapest Retailer
-
$3,523 NZD
B+
Retailer 2
-
$3,842 NZD
View
B+
Retailer 3
-
$4,180 NZD
View
B
Retailer 4
-
$4,344 NZD
View
Final sale: no returns
B
Retailer 5
-
$4,457 NZD
View
Retailer 6
-
$4,499 NZD
View
Price last confirmed 27 days ago
B
Retailer 7
-
$4,719 NZD
View
B
Retailer 8
-
$4,798 NZD
View
B
Retailer 9
-
$6,355 NZD
View
B
Retailer 10
-
$6,763 NZD
View
B
Retailer 11
-
$6,967 NZD
View
B
Retailer 12
-
$7,051 NZD
View
B
Retailer 13
-
$13,257 NZD
View
Most Expensive
Taylor and Hart
7J9K5KU · Oct 18
$17,336 NZD
$9,611 USD
View
Price under review
13 more retailers have this diamond
Prices start from $3,523 NZDSave up to $9,734 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+
3.21ct Radiant
$3,523 NZD