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Radiant|Lab Grown|IGI

3.26ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG821641215

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

Certificate IGI LG821641215

Diamond specifications and retailer prices

From £1,376 GBP
HK$14,400 HKD
As of October 30, 2026
Save £4,804 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,180 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.26ct lab-grown radiant diamond

This 3.26ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821641215 or 821641215. Listed at 15 retailers as of October 30, 2026, with prices from £1,376 to £6,180, a £4,804 spread on the same certified stone. Brilliant Earth lists it at £6,180. 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

3.26
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641215
Dimensions10.37 × 7.49 × 4.92 mm
L/W Ratio1.38
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.37 mm7.49 mm3.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641215
Side View
Table 64.0%Crown 41.7°Girdle: Slightly ThickPavilion 33.4°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £6,180 GBP|Low: £1,376 GBP|High: £7,411 GBP|Avg: £3,246 GBP|-16.6%
Brilliant Earth
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
Retailer 15
October 30, 2026
Retailer 2£1,376 GBP
Retailer 6£1,409 GBP
Retailer 9£1,598 GBP
Retailer 4£1,862 GBP
Retailer 13£1,977 GBP
Retailer 15£2,521 GBP
Retailer 11£2,632 GBP
Retailer 7£3,212 GBP
Retailer 5£3,344 GBP
Retailer 12£3,563 GBP
Retailer 10£3,980 GBP
Retailer 14£4,318 GBP
Retailer 8£4,332 GBP
Retailer 3£5,422 GBP
Brilliant Earth£6,180 GBP

41 data points across 15 retailers

15 retailers£1,376 GBP to £6,180 GBP

A
Cheapest Retailer
-
£1,376 GBP
HK$14,400 HKD
A
Retailer 2
-
£1,409 GBP
$1,888 USD
View
A
Retailer 3
-
£1,598 GBP
View
A
Retailer 4
-
£1,862 GBP
$2,495 USD
View
Retailer 5
-
£1,977 GBP
€2,523 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
£2,521 GBP
$3,378 USD
View
A
Retailer 7
-
£2,632 GBP
ZAR 56,971 ZAR
View
B+
Retailer 8
-
£3,212 GBP
$4,303 USD
View
B+
Retailer 9
-
£3,344 GBP
$4,481 USD
View
B+
Retailer 10
-
£3,563 GBP
View
B+
Retailer 11
-
£3,980 GBP
$5,333 USD
View
Retailer 12
-
£4,318 GBP
$5,785 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£4,332 GBP
$5,804 USD
View
Retailer 14
-
£5,422 GBP
A$11,176 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21144056A · Oct 30
£6,180 GBP
$8,280 USD
View
14 more retailers have this diamond
Prices start from £1,376 GBPSave up to £4,804 GBP

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
3.26ct Radiant
£1,376 GBP