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Round|Lab Grown|IGI

1.03ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG689560552

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689560552

Diamond specifications and retailer prices

From £127 GBP
As of November 5, 2026
Save £609 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £736 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG689560552 or 689560552. Listed at 20 retailers as of November 2, 2026, with prices from £127 to £736, a £609 spread on the same certified stone. MOH London lists it at £736. 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

1.03
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689560552
Dimensions6.54 × 6.58 × 3.95 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
6.54 mm6.58 mm1.03 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689560552
Side View
Table 60.0%Crown 33°Girdle: THN-MEDPavilion 41.4°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £736 GBP|Low: £126 GBP|High: £740 GBP|Avg: £312 GBP
MOH London
Retailer 2
Retailer 3
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
November 6, 2026
Retailer 5£127 GBP
Retailer 13£141 GBP
Retailer 14£147 GBP
Retailer 4£158 GBP
Retailer 16£158 GBP
Retailer 2£277 GBP
Retailer 12£278 GBP
Retailer 3£282 GBP
Retailer 10£282 GBP
Retailer 15£337 GBP
Retailer 8£361 GBP
Retailer 7£371 GBP
Retailer 9£392 GBP
Retailer 11£419 GBP
Retailer 6£506 GBP
MOH London£736 GBP

36 data points across 16 retailers

20 retailers£127 GBP to £736 GBP

A
Cheapest Retailer
-
£127 GBP
A
Retailer 2
-
£141 GBP
View
Final sale: no returns
A
Retailer 3
-
£147 GBP
View
Retailer 4
-
£158 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£158 GBP
View
B+
Retailer 6
-
£267 GBP
View
B+
Retailer 7
-
£277 GBP
View
B+
Retailer 8
-
£278 GBP
View
B+
Retailer 9
-
£282 GBP
View
B+
Retailer 10
-
£282 GBP
View
B+
Retailer 11
-
£337 GBP
View
B+
Retailer 12
-
£361 GBP
View
B+
Retailer 13
-
£371 GBP
View
B+
Retailer 14
-
£371 GBP
View
B+
Retailer 15
-
£392 GBP
View
B
Retailer 16
-
£419 GBP
View
Retailer 17
-
£502 GBP
View
Price last confirmed 46 days ago
B
Retailer 18
-
£506 GBP
View
B
Retailer 19
-
£534 GBP
View
Most Expensive
B
MOH London
LG689560552 · Nov 2
£736 GBP
View
19 more retailers have this diamond
Prices start from £127 GBPSave up to £609 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
1.03ct Round
£127 GBP