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Radiant|Lab Grown|IGI

0.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG837656435

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

Certificate IGI LG837656435

Diamond specifications and retailer prices

From £101 GBP
As of November 4, 2026
Save £920 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,021 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG837656435 or 837656435. Listed at 22 retailers as of November 1, 2026, with prices from £101 to £1,021, a £920 spread on the same certified stone. MOH London lists it at £1,021. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837656435
Dimensions5.65 × 4.09 × 2.66 mm
L/W Ratio1.38
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
5.65 mm4.09 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837656435
Side View
Table 66.0%Crown 46.9°Girdle: MediumPavilion 36.5°Culet: NoneDepth 65.0%

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: Nov 4
Current: £1,021 GBP|Low: £95 GBP|High: £1,034 GBP|Avg: £312 GBP|-1.3%
MOH London
Retailer 2
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Retailer 22
November 4, 2026
Retailer 13£101 GBP
Retailer 17£112 GBP
Retailer 22£117 GBP
Retailer 14£122 GBP
Retailer 4£125 GBP
Retailer 20£169 GBP
Retailer 21£210 GBP
Retailer 8£210 GBP
Retailer 7£221 GBP
Retailer 11£249 GBP
Retailer 10£274 GBP
Retailer 15£290 GBP
Retailer 6£311 GBP
Retailer 9£365 GBP
Retailer 12£385 GBP
Retailer 3£387 GBP
Retailer 16£402 GBP
Retailer 18£424 GBP
Retailer 5£443 GBP
Retailer 2£654 GBP
Retailer 19£733 GBP
MOH London£1,021 GBP

39 data points across 22 retailers

22 retailers£101 GBP to £1,021 GBP

A
Cheapest Retailer
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£101 GBP
A
Retailer 2
-
£112 GBP
View
Final sale: no returns
A
Retailer 3
-
£117 GBP
View
Retailer 4
-
£122 GBP
View
Price last confirmed 23 days ago
A
Retailer 5
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£125 GBP
View
A
Retailer 6
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£169 GBP
View
A
Retailer 7
-
£210 GBP
View
A
Retailer 8
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£210 GBP
View
A
Retailer 9
-
£221 GBP
View
A
Retailer 10
-
£249 GBP
View
Retailer 11
-
£274 GBP
View
Price last confirmed 14 days ago
B+
Retailer 12
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£290 GBP
View
B+
Retailer 13
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£311 GBP
View
Retailer 14
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£365 GBP
View
Price last confirmed 7 days ago
B+
Retailer 15
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£385 GBP
View
B+
Retailer 16
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£387 GBP
View
B+
Retailer 17
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£402 GBP
View
B
Retailer 18
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£424 GBP
View
B
Retailer 19
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£443 GBP
View
B
Retailer 20
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£654 GBP
View
B
Retailer 21
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£733 GBP
View
Most Expensive
B
MOH London
LG837656435 · Nov 1
£1,021 GBP
View
21 more retailers have this diamond
Prices start from £101 GBPSave up to £920 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
0.51ct Radiant
£101 GBP