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Round|Lab Grown|IGI

5.05ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG618431149

Shape and cutting style on the report: Round brilliant

Certificate IGI LG618431149

Diamond specifications and retailer prices

From £3,766 GBP
As of October 30, 2026
Save £23,365 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £27,131 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 5.05ct lab-grown round diamond

This 5.05ct lab-grown round 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 LG618431149 or 618431149. Listed at 18 retailers as of October 30, 2026, with prices from £3,766 to £27,131, a £23,365 spread on the same certified stone. Do Amore Diamonds lists it at £27,131. 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

5.05
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618431149
Dimensions10.95 × 11.00 × 6.79 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.95 mm11.00 mm5.05 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618431149
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A+
Exceptional
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: £27,131 GBP|Low: £3,758 GBP|High: £27,574 GBP|Avg: £9,238 GBP|-1.6%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 12
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Retailer 18
October 30, 2026
Retailer 2£3,766 GBP
Retailer 16£3,943 GBP
Retailer 4£4,132 GBP
Retailer 17£4,157 GBP
Retailer 9£4,488 GBP
Retailer 12£4,674 GBP
Retailer 14£4,675 GBP
Retailer 18£5,633 GBP
Retailer 3£5,993 GBP
Retailer 15£7,067 GBP
Retailer 13£8,498 GBP
Retailer 10£8,570 GBP
Retailer 11£10,328 GBP
Retailer 5£10,543 GBP
Retailer 6£10,739 GBP
Retailer 7£15,229 GBP
Retailer 8£19,791 GBP
Do Amore Diamonds£27,131 GBP

40 data points across 18 retailers

18 retailers£3,766 GBP to £27,131 GBP

A+
Cheapest Retailer
-
£3,766 GBP
A
Retailer 2
-
£3,943 GBP
$5,251 USD
View
A
Retailer 3
-
£4,132 GBP
$5,503 USD
View
A
Retailer 4
-
£4,157 GBP
$5,536 USD
View
A
Retailer 5
-
£4,207 GBP
$5,602 USD
View
A
Retailer 6
-
£4,488 GBP
$5,976 USD
View
Final sale: no returns
A
Retailer 7
-
£4,675 GBP
$6,225 USD
View
A
Retailer 8
-
£5,568 GBP
$7,415 USD
View
A
Retailer 9
-
£5,633 GBP
$7,501 USD
View
A
Retailer 10
-
£5,993 GBP
$7,981 USD
View
A
Retailer 11
-
£7,067 GBP
$9,411 USD
View
A
Retailer 12
-
£8,498 GBP
€10,778 EUR
View
A
Retailer 13
-
£10,328 GBP
View
A
Retailer 14
-
£10,543 GBP
$14,041 USD
View
Retailer 15
-
£10,739 GBP
A$22,002 AUD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£15,229 GBP
$20,280 USD
View
Retailer 17
-
£19,791 GBP
A$40,546 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Do Amore Diamonds
27-421C04D3D · Oct 30
£27,131 GBP
$36,130 USD
View
17 more retailers have this diamond
Prices start from £3,766 GBPSave up to £23,365 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+
5.05ct Round
£3,766 GBP