Radiant|Lab Grown|IGI

5.25ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG840639681

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

Certificate IGI LG840639681

Diamond specifications and retailer prices

From £1,425 GBP
$1,910 USD
As of October 30, 2026
Save £4,530 GBP (76%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £7,212 GBP at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 5.25ct lab-grown radiant diamond

This 5.25ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840639681 or 840639681. Listed at 23 retailers as of October 30, 2026, with a 318% 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

5.25
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.5°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639681
Dimensions13.26 × 8.28 × 5.63 mm
L/W Ratio1.60
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.26 mm8.28 mm5.25 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639681
Side View
Table 67.0%Crown 46.5°Girdle: MediumPavilion 35°Culet: NoneDepth 68.0%

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 30
Current: £7,212 GBP|Low: £1,425 GBP|High: £7,212 GBP|Avg: £3,133 GBP
Helzberg Diamonds
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
Retailer 19
Retailer 20
October 31, 2026
Retailer 11£1,425 GBP
Retailer 17£1,551 GBP
Retailer 7£1,596 GBP
Retailer 9£1,653 GBP
Retailer 13£1,737 GBP
Retailer 3£1,780 GBP
Retailer 18£1,881 GBP
Retailer 2£2,274 GBP
Retailer 16£2,364 GBP
Retailer 19£2,484 GBP
Retailer 20£2,715 GBP
Retailer 8£3,100 GBP
Retailer 6£3,357 GBP
Retailer 14£3,360 GBP
Retailer 5£3,424 GBP
Retailer 4£3,759 GBP
Retailer 15£4,748 GBP
Retailer 12£5,790 GBP
Retailer 10£5,955 GBP
Helzberg Diamonds£7,212 GBP

19 data points across 20 retailers

23 retailers£1,425 GBP to £5,955 GBP

A
Cheapest Retailer
-
£1,425 GBP
$1,910 USD
A
Retailer 2
-
£1,551 GBP
$2,078 USD
View
A
Retailer 3
-
£1,596 GBP
$2,139 USD
View
Final sale: no returns
A
Retailer 4
-
£1,653 GBP
$2,215 USD
View
Retailer 5
-
£1,681 GBP
$2,252 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
£1,737 GBP
View
A
Retailer 7
-
£1,780 GBP
$2,385 USD
View
A
Retailer 8
-
£1,881 GBP
$2,520 USD
View
A
Retailer 9
-
£2,274 GBP
View
B+
Retailer 10
-
£2,364 GBP
$3,168 USD
View
Retailer 11
-
£2,484 GBP
€3,170 EUR
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£2,715 GBP
$3,638 USD
View
B+
Retailer 13
-
£3,100 GBP
$4,153 USD
View
Retailer 14
-
£3,357 GBP
A$6,919 AUD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
£3,360 GBP
ZAR 72,722 ZAR
View
B+
Retailer 16
-
£3,424 GBP
View
B+
Retailer 17
-
£3,759 GBP
$5,037 USD
View
B
Retailer 18
-
£4,529 GBP
$6,068 USD
View
B+
Retailer 19
-
£4,748 GBP
View
B
Retailer 20
-
£5,790 GBP
$7,759 USD
View
B
Retailer 21
-
£5,955 GBP
SGD 10,783 SGD
View
Retailer 22
-
£6,654 GBP
A$13,717 AUD
View
Price last confirmed 22 days ago
Most Expensive
Helzberg Diamonds
ZXZOKGMJPMOH · Oct 13
£7,212 GBP
$9,663 USD
View
Price last confirmed 18 days ago
22 more retailers have this diamond
Prices start from £1,425 GBPSave up to £4,530 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
5.25ct Radiant
£1,425 GBP