Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743593981

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

Certificate IGI LG743593981

Diamond specifications and retailer prices

From £221 GBP
$297 USD
As of October 30, 2026
Save £1,746 GBP (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £2,496 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743593981 or 743593981. Listed at 31 retailers as of October 30, 2026, with a 789% 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
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593981
Dimensions5.88 × 5.88 × 3.94 mm
L/W Ratio1.00
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
5.88 mm5.88 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593981
Side View
Table 61.0%Crown 37.9°Girdle: MediumPavilion 35.2°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £2,496 GBP|Low: £221 GBP|High: £2,496 GBP|Avg: £850 GBP
Brilliant Earth
Retailer 2
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Retailer 24
November 1, 2026
Retailer 8£221 GBP
Retailer 11£265 GBP
Retailer 17£273 GBP
Retailer 24£322 GBP
Retailer 3£391 GBP
Retailer 22£401 GBP
Retailer 9£426 GBP
Retailer 12£469 GBP
Retailer 18£491 GBP
Retailer 20£521 GBP
Retailer 13£543 GBP
Retailer 10£616 GBP
Retailer 14£686 GBP
Retailer 21£705 GBP
Retailer 4£844 GBP
Retailer 5£1,056 GBP
Retailer 15£1,095 GBP
Retailer 7£1,118 GBP
Retailer 16£1,166 GBP
Retailer 2£1,215 GBP
Retailer 19£1,247 GBP
Retailer 23£1,829 GBP
Retailer 6£1,967 GBP
Brilliant Earth£2,496 GBP

38 data points across 24 retailers

31 retailers£221 GBP to £1,967 GBP

A
Cheapest Retailer
-
£221 GBP
$297 USD
Retailer 2
-
£221 GBP
$297 USD
View
Price last confirmed 25 days ago
Retailer 3
-
£235 GBP
$316 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
£265 GBP
$356 USD
View
Final sale: no returns
Retailer 5
-
£273 GBP
$367 USD
View
Price last confirmed 36 days ago
Retailer 6
-
£275 GBP
$369 USD
View
Price last confirmed 30 days ago
Retailer 7
-
£288 GBP
$387 USD
View
Price last confirmed 35 days ago
Retailer 8
-
£322 GBP
View
Price last confirmed 16 days ago
A
Retailer 9
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£391 GBP
$525 USD
View
A
Retailer 10
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£401 GBP
HK$4,200 HKD
View
A
Retailer 11
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£426 GBP
$572 USD
View
A
Retailer 12
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£469 GBP
$630 USD
View
A
Retailer 13
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£491 GBP
€628 EUR
View
A
Retailer 14
-
£521 GBP
ZAR 11,299 ZAR
View
A
Retailer 15
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£543 GBP
View
A
Retailer 16
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£616 GBP
$827 USD
View
A
Retailer 17
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£686 GBP
$921 USD
View
A
Retailer 18
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£705 GBP
A$1,456 AUD
View
B+
Retailer 19
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£844 GBP
$1,133 USD
View
Retailer 20
-
£975 GBP
$1,308 USD
View
Price last confirmed 23 days ago
B+
Retailer 21
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£975 GBP
$1,308 USD
View
Retailer 22
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£1,037 GBP
$1,391 USD
View
Price last confirmed 33 days ago
B+
Retailer 23
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£1,056 GBP
$1,417 USD
View
B+
Retailer 24
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£1,095 GBP
$1,469 USD
View
B+
Retailer 25
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£1,118 GBP
$1,500 USD
View
B+
Retailer 26
-
£1,166 GBP
SGD 2,114 SGD
View
B+
Retailer 27
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£1,215 GBP
View
B+
Retailer 28
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£1,247 GBP
A$2,574 AUD
View
B
Retailer 29
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£1,829 GBP
$2,455 USD
View
B
Retailer 30
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£1,967 GBP
$2,640 USD
View
Most Expensive
Brilliant Earth
17457052Y · Oct 21
£2,496 GBP
$3,350 USD
View
Price last confirmed 12 days ago
30 more retailers have this diamond
Prices start from £221 GBPSave up to £1,746 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
£221 GBP