CaratHunter
Plans
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 HK$15,306 HKD
As of November 6, 2026
Save HK$42,291 HKD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$75,321 HKD 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: HK$19,366 HKD|Low: HK$13,480 HKD|High: HK$115,915 HKD|Avg: HK$35,754 HKD|+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 3HK$15,306 HKD
Retailer 8HK$16,694 HKD
Retailer 10HK$18,159 HKD
Retailer 14HK$18,872 HKD
Retailer 1HK$19,366 HKD
Retailer 2HK$20,503 HKD
Retailer 13HK$20,847 HKD
Retailer 4HK$27,611 HKD
Retailer 5HK$27,799 HKD
Retailer 7HK$29,382 HKD
Retailer 9HK$30,268 HKD
Retailer 12HK$30,636 HKD
Retailer 11HK$57,597 HKD
Taylor and HartHK$75,321 HKD
Retailer 6HK$115,915 HKD

22 data points across 15 retailers

15 retailersHK$15,306 HKD to HK$57,597 HKD

B+
Cheapest Retailer
-
HK$15,306 HKD
B+
Retailer 2
-
HK$16,694 HKD
View
B+
Retailer 3
-
HK$18,159 HKD
View
B
Retailer 4
-
HK$18,872 HKD
View
Final sale: no returns
B
Retailer 5
-
HK$19,366 HKD
View
Retailer 6
-
HK$19,546 HKD
View
Price last confirmed 27 days ago
B
Retailer 7
-
HK$20,503 HKD
View
B
Retailer 8
-
HK$20,847 HKD
View
B
Retailer 9
-
HK$27,611 HKD
View
B
Retailer 10
-
HK$29,382 HKD
View
B
Retailer 11
-
HK$30,268 HKD
View
B
Retailer 12
-
HK$30,636 HKD
View
B
Retailer 13
-
HK$57,597 HKD
View
Most Expensive
Taylor and Hart
7J9K5KU · Oct 18
HK$75,321 HKD
$9,611 USD
View
Price under review
13 more retailers have this diamond
Prices start from HK$15,306 HKDSave up to HK$42,291 HKD

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
HK$15,306 HKD