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Radiant|Lab Grown|IGI

5.09ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754508855

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

Certificate IGI LG754508855

Diamond specifications and retailer prices

From £5,498 GBP
$7,367 USD
As of October 30, 2026
Save £19,874 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £25,372 GBP at Michael Trio · As of October 31, 2026
View at Michael Trio

About this 5.09ct lab-grown radiant diamond

This 5.09ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508855 or 754508855. Listed at 13 retailers as of October 30, 2026, with prices from £5,498 to £25,372, a £19,874 spread on the same certified stone. Michael Trio lists it at £25,372. 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

5.09
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508855
Dimensions8.73 × 8.73 × 5.67 mm
L/W Ratio1.00
Culet sizePointed
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
8.73 mm8.73 mm5.09 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508855
Side View
Table 65.0%Crown 42.7°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 64.9%

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: £25,372 GBP|Low: £5,498 GBP|High: £27,400 GBP|Avg: £13,242 GBP|-7.4%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 7£5,498 GBP
Retailer 6£5,693 GBP
Retailer 12£6,922 GBP
Retailer 9£7,451 GBP
Retailer 4£7,687 GBP
Retailer 2£8,382 GBP
Retailer 8£11,061 GBP
Retailer 13£12,259 GBP
Retailer 11£13,415 GBP
Retailer 3£17,860 GBP
Retailer 5£20,208 GBP
Retailer 10£22,254 GBP
Michael Trio£25,372 GBP

28 data points across 13 retailers

13 retailers£5,498 GBP to £25,372 GBP

A
Cheapest Retailer
-
£5,498 GBP
$7,367 USD
A
Retailer 2
-
£5,693 GBP
$7,628 USD
View
A
Retailer 3
-
£6,922 GBP
$9,275 USD
View
A
Retailer 4
-
£7,451 GBP
HK$78,000 HKD
View
A
Retailer 5
-
£7,687 GBP
$10,300 USD
View
A
Retailer 6
-
£8,382 GBP
View
A
Retailer 7
-
£11,061 GBP
$14,820 USD
View
Retailer 8
-
£12,259 GBP
€15,644 EUR
View
Price last confirmed 7 days ago
A
Retailer 9
-
£13,415 GBP
View
Retailer 10
-
£17,860 GBP
A$36,817 AUD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
£20,208 GBP
$27,077 USD
View
B
Retailer 12
-
£22,254 GBP
$29,818 USD
View
Most Expensive
B
Michael Trio
5984198460 · Oct 31
£25,372 GBP
SGD 45,941 SGD
View
12 more retailers have this diamond
Prices start from £5,498 GBPSave up to £19,874 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
5.09ct Radiant
£5,498 GBP