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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG627461503

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

Certificate IGI LG627461503

Diamond specifications and retailer prices

From £230 GBP
$308 USD
As of November 2, 2026
Save £2,066 GBP (90%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £2,296 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.51ct lab-grown radiant diamond

This 1.51ct 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 LG627461503 or 627461503. Listed at 26 retailers as of November 2, 2026, with prices from £230 to £2,296, a £2,066 spread on the same certified stone. Diamond Quarter lists it at £2,296. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627461503
Dimensions8.04 × 5.80 × 3.94 mm
L/W Ratio1.39
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
8.04 mm5.80 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627461503
Side View
Table 64.0%Crown 27.5°Girdle: MediumPavilionCulet: NoneDepth 67.9%

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: £506 GBP|Low: £220 GBP|High: £2,526 GBP|Avg: £787 GBP|+1.0%
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November 3, 2026
Retailer 4£230 GBP
Retailer 20£256 GBP
Retailer 24£266 GBP
Retailer 3£284 GBP
Retailer 14£334 GBP
Retailer 7£401 GBP
Retailer 23£402 GBP
Retailer 19£462 GBP
Retailer 11£477 GBP
Retailer 18£490 GBP
Retailer 1£506 GBP
Retailer 13£639 GBP
Retailer 22£663 GBP
Retailer 8£754 GBP
Retailer 6£873 GBP
Retailer 5£914 GBP
Retailer 17£943 GBP
Retailer 15£949 GBP
Retailer 16£953 GBP
Retailer 10£1,092 GBP
Retailer 12£1,139 GBP
Retailer 9£1,145 GBP
Retailer 2£1,926 GBP
Retailer 21£2,116 GBP

34 data points across 24 retailers

26 retailers£230 GBP to £2,296 GBP

A
Cheapest Retailer
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£230 GBP
$308 USD
A
Retailer 2
-
£256 GBP
$344 USD
View
Final sale: no returns
A
Retailer 3
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£266 GBP
$357 USD
View
A
Retailer 4
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£284 GBP
$381 USD
View
A
Retailer 5
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£334 GBP
HK$3,500 HKD
View
A
Retailer 6
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£401 GBP
$538 USD
View
A
Retailer 7
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£402 GBP
$540 USD
View
A
Retailer 8
-
£462 GBP
€591 EUR
View
A
Retailer 9
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£477 GBP
$640 USD
View
A
Retailer 10
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£490 GBP
ZAR 10,626 ZAR
View
A
Retailer 11
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£506 GBP
View
Retailer 12
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£639 GBP
$857 USD
View
Price last confirmed 7 days ago
A
Retailer 13
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£663 GBP
A$1,368 AUD
View
B+
Retailer 14
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£754 GBP
$1,012 USD
View
B+
Retailer 15
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£873 GBP
$1,172 USD
View
B+
Retailer 16
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£914 GBP
$1,226 USD
View
B+
Retailer 17
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£943 GBP
$1,266 USD
View
B+
Retailer 18
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£949 GBP
$1,273 USD
View
B+
Retailer 19
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£953 GBP
SGD 1,729 SGD
View
B+
Retailer 20
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£1,092 GBP
$1,466 USD
View
B+
Retailer 21
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£1,139 GBP
View
B+
Retailer 22
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£1,145 GBP
$1,537 USD
View
Retailer 23
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£1,220 GBP
A$2,519 AUD
View
Price last confirmed 29 days ago
B
Retailer 24
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£1,926 GBP
$2,585 USD
View
B
Retailer 25
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£2,116 GBP
$2,840 USD
View
Most Expensive
B
Diamond Quarter
1.51IFDLG03EC0AN · Nov 2
£2,296 GBP
View
25 more retailers have this diamond
Prices start from £230 GBPSave up to £2,066 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
1.51ct Radiant
£230 GBP