Radiant|Lab Grown|IGI

1.55ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG786656406

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

Certificate IGI LG786656406

Diamond specifications and retailer prices

From £335 GBP
$449 USD
As of October 30, 2026
Save £1,904 GBP (85%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,620 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786656406 or 786656406. Listed at 24 retailers as of October 30, 2026, with a 568% 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

1.55
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786656406
Dimensions8.37 × 5.63 × 3.72 mm
L/W Ratio1.49
Culet sizePointed
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
8.37 mm5.63 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786656406
Side View
Table 68.0%Crown 44.9°Girdle: Slightly ThickPavilion 36°Culet: NoneDepth 66.1%

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: £2,620 GBP|Low: £335 GBP|High: £2,933 GBP|Avg: £1,170 GBP|-0.3%
Rare Carat
Retailer 2
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Retailer 21
October 31, 2026
Retailer 10£335 GBP
Retailer 21£375 GBP
Retailer 20£393 GBP
Retailer 9£416 GBP
Retailer 19£522 GBP
Retailer 4£594 GBP
Retailer 6£652 GBP
Retailer 5£661 GBP
Retailer 16£688 GBP
Retailer 18£714 GBP
Retailer 7£833 GBP
Retailer 2£1,117 GBP
Retailer 8£1,336 GBP
Retailer 3£1,360 GBP
Retailer 12£1,454 GBP
Retailer 11£1,503 GBP
Retailer 14£1,524 GBP
Retailer 17£1,535 GBP
Retailer 15£1,601 GBP
Retailer 13£2,239 GBP
Rare Carat£2,620 GBP

26 data points across 21 retailers

24 retailers£335 GBP to £2,239 GBP

A
Cheapest Retailer
-
£335 GBP
$449 USD
A
Retailer 2
-
£375 GBP
$503 USD
View
A
Retailer 3
-
£393 GBP
$527 USD
View
Final sale: no returns
A
Retailer 4
-
£416 GBP
$557 USD
View
Retailer 5
-
£460 GBP
$617 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£522 GBP
$700 USD
View
A
Retailer 7
-
£594 GBP
$796 USD
View
A
Retailer 8
-
£652 GBP
$873 USD
View
Retailer 9
-
£661 GBP
€844 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
£688 GBP
View
A
Retailer 11
-
£714 GBP
ZAR 15,462 ZAR
View
A
Retailer 12
-
£833 GBP
$1,116 USD
View
B+
Retailer 13
-
£1,005 GBP
$1,346 USD
View
Retailer 14
-
£1,117 GBP
$1,497 USD
View
B+
Retailer 15
-
£1,336 GBP
$1,790 USD
View
B+
Retailer 16
-
£1,360 GBP
$1,823 USD
View
B+
Retailer 17
-
£1,448 GBP
$1,940 USD
View
B+
Retailer 18
-
£1,454 GBP
SGD 2,633 SGD
View
B
Retailer 19
-
£1,503 GBP
$2,014 USD
View
Retailer 20
-
£1,524 GBP
View
Price last confirmed 21 days ago
B+
Retailer 21
-
£1,535 GBP
View
B+
Retailer 22
-
£1,601 GBP
$2,145 USD
View
B
Retailer 23
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£2,239 GBP
$3,000 USD
View
Most Expensive
Rare Carat
PD-174858 · Oct 18
£2,620 GBP
$3,510 USD
View
Price last confirmed 12 days ago
23 more retailers have this diamond
Prices start from £335 GBPSave up to £1,904 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
1.55ct Radiant
£335 GBP