Radiant|Lab Grown|IGI

3.51ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG710589854

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

Certificate IGI LG710589854

Diamond specifications and retailer prices

From £809 GBP
$1,085 USD
As of October 30, 2026
Save £4,706 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £5,514 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.51ct lab-grown radiant diamond

This 3.51ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG710589854 or 710589854. Listed at 23 retailers as of October 30, 2026, with prices from £809 to £5,514, a £4,706 spread on the same certified stone. Brilliant Earth lists it at £5,514. 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

3.51
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710589854
Dimensions10.76 × 7.62 × 4.96 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.76 mm7.62 mm3.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG710589854
Side View
Table 65.0%Crown 40.6°Girdle: MediumPavilion 32.7°Culet: NoneDepth 65.1%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £5,514 GBP|Low: £776 GBP|High: £8,115 GBP|Avg: £2,271 GBP|-32.0%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 3£809 GBP
Retailer 5£937 GBP
Retailer 4£975 GBP
Retailer 16£1,066 GBP
Retailer 14£1,087 GBP
Retailer 6£1,144 GBP
Retailer 19£1,341 GBP
Retailer 13£1,358 GBP
Retailer 15£1,494 GBP
Retailer 10£1,757 GBP
Retailer 20£1,788 GBP
Retailer 18£2,177 GBP
Retailer 9£2,295 GBP
Retailer 7£2,359 GBP
Retailer 21£2,589 GBP
Retailer 17£2,772 GBP
Retailer 8£3,142 GBP
Retailer 2£3,180 GBP
Retailer 11£3,276 GBP
Retailer 12£4,527 GBP
Brilliant Earth£5,514 GBP

38 data points across 21 retailers

23 retailers£809 GBP to £5,514 GBP

A
Cheapest Retailer
-
£809 GBP
$1,085 USD
A
Retailer 2
-
£937 GBP
$1,258 USD
View
Retailer 3
-
£937 GBP
$1,258 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
£975 GBP
$1,309 USD
View
Final sale: no returns
A
Retailer 5
-
£1,066 GBP
$1,430 USD
View
A
Retailer 6
-
£1,087 GBP
HK$11,400 HKD
View
A
Retailer 7
-
£1,144 GBP
$1,535 USD
View
A
Retailer 8
-
£1,341 GBP
$1,800 USD
View
A
Retailer 9
-
£1,358 GBP
View
A
Retailer 10
-
£1,494 GBP
€1,909 EUR
View
A
Retailer 11
-
£1,757 GBP
$2,358 USD
View
A
Retailer 12
-
£1,788 GBP
$2,400 USD
View
A
Retailer 13
-
£2,177 GBP
ZAR 47,192 ZAR
View
B+
Retailer 14
-
£2,295 GBP
$3,080 USD
View
B+
Retailer 15
-
£2,359 GBP
$3,165 USD
View
B+
Retailer 16
-
£2,589 GBP
View
B+
Retailer 17
-
£2,715 GBP
$3,643 USD
View
B+
Retailer 18
-
£2,772 GBP
$3,720 USD
View
B+
Retailer 19
-
£3,142 GBP
SGD 5,698 SGD
View
B+
Retailer 20
-
£3,180 GBP
View
B+
Retailer 21
-
£3,276 GBP
$4,396 USD
View
Retailer 22
-
£4,527 GBP
$6,075 USD
View
Price last confirmed 35 days ago
Most Expensive
B
Brilliant Earth
14455156A · Oct 31
£5,514 GBP
$7,400 USD
View
22 more retailers have this diamond
Prices start from £809 GBPSave up to £4,706 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
3.51ct Radiant
£809 GBP