Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG787610099

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

Certificate IGI LG787610099

Diamond specifications and retailer prices

From £614 GBP
$823 USD
As of October 29, 2026
Save £3,147 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,422 GBP at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG787610099 or 787610099. Listed at 20 retailers as of October 28, 2026, with a 512% 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

4.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787610099
Dimensions12.01 × 7.91 × 5.25 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm7.91 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787610099
Side View
Table 64.0%Crown 37.5°Girdle: ThickPavilion 37.5°Culet: NoneDepth 66.4%

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 29
Current: £1,020 GBP|Low: £528 GBP|High: £3,806 GBP|Avg: £1,444 GBP|-12.9%
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
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 3£549 GBP
Retailer 16£614 GBP
Retailer 5£637 GBP
Retailer 7£637 GBP
Retailer 13£787 GBP
Retailer 4£905 GBP
Retailer 2£912 GBP
Retailer 1£1,020 GBP
Retailer 14£1,054 GBP
Retailer 12£1,356 GBP
Retailer 15£1,364 GBP
Retailer 18£1,570 GBP
Retailer 6£1,824 GBP
Retailer 9£2,066 GBP
Retailer 10£2,196 GBP
Retailer 8£2,271 GBP
Retailer 11£2,516 GBP
Retailer 17£3,762 GBP

37 data points across 18 retailers

20 retailers£614 GBP to £3,762 GBP

Retailer 1
-
£549 GBP
$736 USD
Price last confirmed 11 days ago
A
Retailer 2
-
£614 GBP
$823 USD
View
Final sale: no returns
Retailer 3
-
£637 GBP
$854 USD
View
Price last confirmed 13 days ago
Retailer 4
-
£637 GBP
$854 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
£787 GBP
$1,055 USD
View
A
Retailer 6
-
£905 GBP
$1,212 USD
View
B+
Retailer 7
-
£912 GBP
$1,222 USD
View
A
Retailer 8
-
£1,020 GBP
View
Retailer 9
-
£1,054 GBP
€1,345 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
£1,356 GBP
ZAR 29,354 ZAR
View
Retailer 11
-
£1,364 GBP
A$2,812 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£1,570 GBP
$2,103 USD
View
B+
Retailer 13
-
£1,824 GBP
$2,444 USD
View
B+
Retailer 14
-
£2,066 GBP
$2,769 USD
View
B+
Retailer 15
-
£2,154 GBP
$2,886 USD
View
B+
Retailer 16
-
£2,196 GBP
$2,943 USD
View
B+
Retailer 17
-
£2,271 GBP
$3,043 USD
View
B+
Retailer 18
-
£2,516 GBP
View
B
Retailer 19
-
£3,762 GBP
$5,040 USD
View
Most Expensive
Queensmith
LG787610099 · Oct 10
£5,422 GBP
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from £614 GBPSave up to £3,147 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
4.51ct Radiant
£614 GBP