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Round|Lab Grown|IGI

5.18ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG813601643

Shape and cutting style on the report: Round brilliant

Certificate IGI LG813601643

Diamond specifications and retailer prices

From £5,242 GBP
$7,024 USD
As of October 26, 2026
Save £28,253 GBP (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £33,495 GBP at With Clarity · As of October 30, 2026
View at With Clarity

About this 5.18ct lab-grown round diamond

This 5.18ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG813601643 or 813601643. Listed at 21 retailers as of October 26, 2026, with prices from £5,242 to £33,495, a £28,253 spread on the same certified stone. With Clarity lists it at £33,495. 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

5.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813601643
Dimensions11.04 × 11.11 × 6.84 mm
L/W Ratio1.01
Girdle conditionFaceted
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
11.04 mm11.11 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813601643
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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 26
Current: £10,336 GBP|Low: £4,947 GBP|High: £32,825 GBP|Avg: £13,220 GBP|+2.2%
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
Retailer 15
With Clarity
October 27, 2026
Retailer 2£5,242 GBP
Retailer 12£6,050 GBP
Retailer 7£6,497 GBP
Retailer 3£7,447 GBP
Retailer 11£7,558 GBP
Retailer 8£7,974 GBP
Retailer 5£8,001 GBP
Retailer 1£10,336 GBP
Retailer 6£10,376 GBP
Retailer 15£10,535 GBP
Retailer 9£12,860 GBP
Retailer 10£13,238 GBP
Retailer 14£17,010 GBP
Retailer 13£17,116 GBP
Retailer 4£25,487 GBP
With Clarity£32,825 GBP

38 data points across 16 retailers

21 retailers£5,242 GBP to £33,495 GBP

A
Cheapest Retailer
-
£5,242 GBP
$7,024 USD
Retailer 2
-
£5,639 GBP
$7,556 USD
View
Price last confirmed 21 days ago
Retailer 3
-
£5,865 GBP
$7,858 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
£6,050 GBP
CA$11,259 CAD
View
A
Retailer 5
-
£6,497 GBP
$8,705 USD
View
Retailer 6
-
£6,541 GBP
$8,764 USD
View
Price last confirmed 29 days ago
Retailer 7
-
£6,541 GBP
$8,764 USD
View
Price last confirmed 19 days ago
Retailer 8
-
£7,357 GBP
$9,857 USD
View
Price last confirmed 24 days ago
A
Retailer 9
-
£7,447 GBP
$9,978 USD
View
A
Retailer 10
-
£7,974 GBP
View
A
Retailer 11
-
£8,001 GBP
$10,720 USD
View
A
Retailer 12
-
£10,336 GBP
€13,189 EUR
View
A
Retailer 13
-
£10,535 GBP
$14,116 USD
View
B+
Retailer 14
-
£12,860 GBP
View
B+
Retailer 15
-
£13,238 GBP
ZAR 286,544 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£17,010 GBP
$22,792 USD
View
B+
Retailer 17
-
£17,116 GBP
$22,934 USD
View
B+
Retailer 18
-
£18,212 GBP
$24,402 USD
View
B
Retailer 19
-
£21,731 GBP
$29,117 USD
View
B
Retailer 20
-
£25,487 GBP
$34,150 USD
View
Most Expensive
B
With Clarity
813601643 · Oct 30
£33,495 GBP
$44,880 USD
View
20 more retailers have this diamond
Prices start from £5,242 GBPSave up to £28,253 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
5.18ct Round
£5,242 GBP