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Radiant|Lab Grown|IGI

5.17ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804665318

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

Certificate IGI LG804665318

Diamond specifications and retailer prices

From £6,797 GBP
$9,107 USD
As of October 30, 2026
Save £7,259 GBP (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £15,347 GBP at Yorxs · As of October 23, 2026
View at Yorxs

About this 5.17ct lab-grown radiant diamond

This 5.17ct 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 LG804665318 or 804665318. Listed at 14 retailers as of October 29, 2026, with a 107% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.17
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804665318
Dimensions11.98 × 8.54 × 5.82 mm
L/W Ratio1.40
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
11.98 mm8.54 mm5.17 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804665318
Side View
Table 59.0%Crown 38.8°Girdle: Slightly ThickPavilion 34.1°Culet: NoneDepth 68.1%

Caratlytics Score

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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: £12,994 GBP|Low: £6,797 GBP|High: £45,892 GBP|Avg: £13,383 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
Yorxs
October 30, 2026
Retailer 8£6,797 GBP
Retailer 10£6,838 GBP
Retailer 4£6,924 GBP
Retailer 3£7,068 GBP
Retailer 13£7,803 GBP
Retailer 2£8,156 GBP
Retailer 11£8,631 GBP
Retailer 9£9,118 GBP
Retailer 7£9,120 GBP
Retailer 5£9,172 GBP
Retailer 1£12,994 GBP
Retailer 6£14,056 GBP
Yorxs£15,347 GBP
Retailer 12£42,414 GBP

36 data points across 14 retailers

14 retailers£6,797 GBP to £14,056 GBP

A
Cheapest Retailer
-
£6,797 GBP
$9,107 USD
A
Retailer 2
-
£6,838 GBP
$9,162 USD
View
A
Retailer 3
-
£6,924 GBP
$9,278 USD
View
A
Retailer 4
-
£7,068 GBP
$9,471 USD
View
A
Retailer 5
-
£7,803 GBP
$10,455 USD
View
A
Retailer 6
-
£8,156 GBP
$10,928 USD
View
A
Retailer 7
-
£8,631 GBP
$11,564 USD
View
A
Retailer 8
-
£9,118 GBP
$12,217 USD
View
A
Retailer 9
-
£9,120 GBP
$12,220 USD
View
A
Retailer 10
-
£9,172 GBP
$12,290 USD
View
Final sale: no returns
A
Retailer 11
-
£12,994 GBP
$17,410 USD
View
B+
Retailer 12
-
£14,056 GBP
View
Most Expensive
Yorxs
557461931 · Oct 23
£15,347 GBP
€19,584 EUR
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from £6,797 GBPSave up to £7,259 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
5.17ct Radiant
£6,797 GBP