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Round|Lab Grown|IGI

0.51ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG706572817

Shape and cutting style on the report: Round brilliant

Certificate IGI LG706572817

Diamond specifications and retailer prices

From £67 GBP
As of November 5, 2026
Save £540 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £607 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG706572817 or 706572817. Listed at 12 retailers as of November 2, 2026, with prices from £67 to £607, a £540 spread on the same certified stone. MOH London lists it at £607. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706572817
Dimensions5.10 × 5.07 × 3.18 mm
L/W Ratio1.01
Girdle conditionFaceted
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
5.10 mm5.07 mm0.51 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706572817
Side View
Table 57.0%Crown 35.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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 5
Current: £607 GBP|Low: £64 GBP|High: £614 GBP|Avg: £194 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8£67 GBP
Retailer 9£77 GBP
Retailer 11£88 GBP
Retailer 5£88 GBP
Retailer 3£113 GBP
Retailer 6£130 GBP
Retailer 10£186 GBP
Retailer 4£219 GBP
Retailer 12£256 GBP
Retailer 2£267 GBP
Retailer 7£297 GBP
MOH London£607 GBP

24 data points across 12 retailers

12 retailers£67 GBP to £607 GBP

A
Cheapest Retailer
-
£67 GBP
A
Retailer 2
-
£77 GBP
View
Retailer 3
-
£88 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£88 GBP
View
B+
Retailer 5
-
£113 GBP
View
A
Retailer 6
-
£130 GBP
View
B+
Retailer 7
-
£181 GBP
View
B+
Retailer 8
-
£186 GBP
View
B+
Retailer 9
-
£256 GBP
View
B+
Retailer 10
-
£267 GBP
View
B
Retailer 11
-
£297 GBP
View
Most Expensive
B
MOH London
LG706572817 · Nov 2
£607 GBP
View
11 more retailers have this diamond
Prices start from £67 GBPSave up to £540 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 Round
£67 GBP