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Radiant|Lab Grown|IGI

1.45ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825657802

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

Certificate IGI LG825657802

Diamond specifications and retailer prices

From £199 GBP
$267 USD
As of October 30, 2026
Save £1,913 GBP (91%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,403 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.45ct lab-grown radiant diamond

This 1.45ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825657802 or 825657802. Listed at 14 retailers as of October 30, 2026, with a 960% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825657802
Dimensions8.15 × 5.60 × 3.81 mm
L/W Ratio1.46
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
8.15 mm5.60 mm1.45 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825657802
Side View
Table 65.0%Crown 39°Girdle: MediumPavilion 36.7°Culet: NoneDepth 68.0%

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: £2,403 GBP|Low: £199 GBP|High: £3,202 GBP|Avg: £1,019 GBP|-0.3%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 30, 2026
Retailer 13£199 GBP
Retailer 4£231 GBP
Retailer 10£257 GBP
Retailer 17£411 GBP
Retailer 12£429 GBP
Retailer 14£441 GBP
Retailer 6£641 GBP
Retailer 7£661 GBP
Retailer 16£760 GBP
Retailer 8£837 GBP
Retailer 18£878 GBP
Retailer 3£899 GBP
Retailer 11£1,100 GBP
Retailer 9£1,306 GBP
Retailer 15£1,769 GBP
Retailer 5£1,823 GBP
Retailer 2£2,112 GBP
Rare Carat£2,403 GBP

19 data points across 18 retailers

14 retailers£199 GBP to £2,112 GBP

A+
Cheapest Retailer
-
£199 GBP
$267 USD
A
Retailer 2
-
£231 GBP
$310 USD
View
A
Retailer 3
-
£411 GBP
$551 USD
View
A
Retailer 4
-
£429 GBP
$575 USD
View
A
Retailer 5
-
£441 GBP
$591 USD
View
Retailer 6
-
£661 GBP
ZAR 14,308 ZAR
View
Price last confirmed 49 days ago
B+
Retailer 7
-
£760 GBP
$1,018 USD
View
B+
Retailer 8
-
£878 GBP
$1,176 USD
View
B+
Retailer 9
-
£899 GBP
$1,204 USD
View
B+
Retailer 10
-
£1,100 GBP
View
B
Retailer 11
-
£1,769 GBP
$2,370 USD
View
B
Retailer 12
-
£1,823 GBP
$2,443 USD
View
B
Retailer 13
-
£2,112 GBP
$2,830 USD
View
Most Expensive
Rare Carat
PE-236930 · Oct 21
£2,403 GBP
$3,220 USD
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from £199 GBPSave up to £1,913 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+
1.45ct Radiant
£199 GBP