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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743593979

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

Certificate IGI LG743593979

Diamond specifications and retailer prices

From £221 GBP
$297 USD
As of November 2, 2026
Save £1,746 GBP (89%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £2,496 GBP at Brilliant Earth · As of October 22, 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 LG743593979 or 743593979. Listed at 30 retailers as of November 2, 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 angle36.8°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593979
Dimensions5.79 × 5.79 × 3.78 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
5.79 mm5.79 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593979
Side View
Table 62.0%Crown 36.8°Girdle: MediumPavilion 33°Culet: NoneDepth 65.1%

Caratlytics Score

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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: Nov 2
Current: £2,496 GBP|Low: £221 GBP|High: £2,496 GBP|Avg: £918 GBP
Brilliant Earth
Retailer 2
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Retailer 22
November 2, 2026
Retailer 5£221 GBP
Retailer 3£265 GBP
Retailer 22£391 GBP
Retailer 20£401 GBP
Retailer 6£426 GBP
Retailer 11£469 GBP
Retailer 17£491 GBP
Retailer 2£523 GBP
Retailer 13£543 GBP
Retailer 7£616 GBP
Retailer 12£686 GBP
Retailer 19£707 GBP
Retailer 4£844 GBP
Retailer 9£1,056 GBP
Retailer 14£1,095 GBP
Retailer 8£1,118 GBP
Retailer 15£1,166 GBP
Retailer 16£1,215 GBP
Retailer 18£1,247 GBP
Retailer 21£1,829 GBP
Retailer 10£1,967 GBP
Brilliant Earth£2,496 GBP

37 data points across 22 retailers

30 retailers£221 GBP to £1,967 GBP

A
Cheapest Retailer
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£221 GBP
$297 USD
Retailer 2
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£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
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£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 34 days ago
A
Retailer 8
-
£391 GBP
$525 USD
View
A
Retailer 9
-
£401 GBP
HK$4,200 HKD
View
A
Retailer 10
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£426 GBP
$572 USD
View
A
Retailer 11
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£469 GBP
$630 USD
View
A
Retailer 12
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£491 GBP
€628 EUR
View
A
Retailer 13
-
£523 GBP
ZAR 11,339 ZAR
View
A
Retailer 14
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£543 GBP
View
A
Retailer 15
-
£616 GBP
$827 USD
View
A
Retailer 16
-
£686 GBP
$921 USD
View
A
Retailer 17
-
£707 GBP
A$1,460 AUD
View
B+
Retailer 18
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£844 GBP
$1,133 USD
View
B+
Retailer 19
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£975 GBP
$1,308 USD
View
Retailer 20
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£975 GBP
$1,308 USD
View
Price last confirmed 23 days ago
Retailer 21
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£1,037 GBP
$1,391 USD
View
Price last confirmed 33 days ago
B+
Retailer 22
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£1,056 GBP
$1,417 USD
View
B+
Retailer 23
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£1,095 GBP
$1,469 USD
View
B+
Retailer 24
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£1,118 GBP
$1,500 USD
View
B+
Retailer 25
-
£1,166 GBP
SGD 2,114 SGD
View
B+
Retailer 26
-
£1,215 GBP
View
B+
Retailer 27
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£1,247 GBP
A$2,574 AUD
View
B
Retailer 28
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£1,829 GBP
$2,455 USD
View
B
Retailer 29
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£1,967 GBP
$2,640 USD
View
Most Expensive
Brilliant Earth
17457421Y · Oct 22
£2,496 GBP
$3,350 USD
View
Price last confirmed 11 days ago
29 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