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Radiant|Lab Grown|IGI

5.10ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG787621181

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

Certificate IGI LG787621181

Diamond specifications and retailer prices

From £7,890 GBP
$10,572 USD
As of October 30, 2026
Save £19,701 GBP (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £27,591 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.1ct lab-grown radiant diamond

This 5.1ct lab-grown radiant 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 LG787621181 or 787621181. Listed at 13 retailers as of October 30, 2026, with prices from £7,890 to £27,591, a £19,701 spread on the same certified stone. Taylor and Hart lists it at £27,591. 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

5.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787621181
Dimensions12.03 × 8.63 × 5.75 mm
L/W Ratio1.39
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
12.03 mm8.63 mm5.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787621181
Side View
Table 63.0%Crown 44.4°Girdle: MED-STKPavilion 34°Culet: NoneDepth 66.6%

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: £12,822 GBP|Low: £7,612 GBP|High: £49,467 GBP|Avg: £17,165 GBP|-40.8%
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
Taylor and Hart
October 30, 2026
Retailer 5£7,612 GBP
Retailer 11£7,890 GBP
Retailer 13£8,451 GBP
Retailer 2£8,821 GBP
Retailer 10£9,210 GBP
Retailer 6£10,790 GBP
Retailer 1£12,822 GBP
Retailer 8£14,317 GBP
Retailer 9£15,240 GBP
Retailer 4£16,583 GBP
Retailer 7£18,421 GBP
Retailer 12£25,121 GBP
Taylor and Hart£27,591 GBP
Retailer 3£49,467 GBP

34 data points across 14 retailers

13 retailers£7,890 GBP to £27,591 GBP

A
Cheapest Retailer
-
£7,890 GBP
$10,572 USD
A
Retailer 2
-
£8,451 GBP
$11,324 USD
View
A
Retailer 3
-
£8,821 GBP
$11,819 USD
View
A
Retailer 4
-
£9,210 GBP
$12,340 USD
View
A
Retailer 5
-
£10,790 GBP
View
A
Retailer 6
-
£12,822 GBP
$17,180 USD
View
A
Retailer 7
-
£14,317 GBP
View
Retailer 8
-
£15,240 GBP
€19,448 EUR
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£16,583 GBP
$22,219 USD
View
B+
Retailer 10
-
£18,421 GBP
ZAR 398,734 ZAR
View
B+
Retailer 11
-
£25,121 GBP
$33,660 USD
View
Most Expensive
B
Taylor and Hart
96R8Q77 · Oct 30
£27,591 GBP
$36,969 USD
View
11 more retailers have this diamond
Prices start from £7,890 GBPSave up to £19,701 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
5.10ct Radiant
£7,890 GBP