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Round|Lab Grown|IGI

1.03ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG800630464

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800630464

Diamond specifications and retailer prices

From £100 GBP
As of November 1, 2026
Save £940 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,041 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG800630464 or 800630464. Listed at 15 retailers as of November 1, 2026, with prices from £100 to £1,041, a £940 spread on the same certified stone. MOH London lists it at £1,041. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800630464
Dimensions6.48 × 6.53 × 3.93 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.48 mm6.53 mm1.03 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800630464
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,041 GBP|Low: £100 GBP|High: £1,046 GBP|Avg: £263 GBP|+65.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 7£100 GBP
Retailer 4£113 GBP
Retailer 14£117 GBP
Retailer 3£125 GBP
Retailer 11£125 GBP
Retailer 12£210 GBP
Retailer 9£210 GBP
Retailer 2£221 GBP
Retailer 6£234 GBP
Retailer 8£246 GBP
Retailer 10£297 GBP
Retailer 15£308 GBP
Retailer 13£400 GBP
Retailer 5£424 GBP
MOH London£1,041 GBP

31 data points across 15 retailers

15 retailers£100 GBP to £1,041 GBP

A
Cheapest Retailer
-
£100 GBP
A
Retailer 2
-
£113 GBP
View
Final sale: no returns
A
Retailer 3
-
£117 GBP
View
Retailer 4
-
£125 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£125 GBP
View
A
Retailer 6
-
£210 GBP
View
A
Retailer 7
-
£210 GBP
View
A
Retailer 8
-
£221 GBP
View
A
Retailer 9
-
£234 GBP
View
A
Retailer 10
-
£246 GBP
View
B+
Retailer 11
-
£297 GBP
View
B+
Retailer 12
-
£308 GBP
View
B+
Retailer 13
-
£400 GBP
View
B
Retailer 14
-
£424 GBP
View
Most Expensive
C
MOH London
LG800630464 · Nov 2
£1,041 GBP
View
14 more retailers have this diamond
Prices start from £100 GBPSave up to £940 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
£100 GBP