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Asscher|Lab Grown|IGI

1.03ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG677505605

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG677505605

Diamond specifications and retailer prices

From £117 GBP
As of November 4, 2026
Save £557 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £674 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct lab-grown asscher diamond

This 1.03ct lab-grown asscher 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 LG677505605 or 677505605. Listed at 16 retailers as of November 4, 2026, with prices from £117 to £674, a £557 spread on the same certified stone. MOH London lists it at £674. 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 angle33.1°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677505605
Dimensions5.58 × 5.53 × 3.77 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.58 mm5.53 mm1.03 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677505605
Side View
Table 64.0%Crown 33.1°Girdle: MediumPavilion 41.4°Culet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £674 GBP|Low: £117 GBP|High: £683 GBP|Avg: £329 GBP|+11.7%
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
Retailer 16
November 5, 2026
Retailer 10£117 GBP
Retailer 13£135 GBP
Retailer 4£144 GBP
Retailer 11£144 GBP
Retailer 3£173 GBP
Retailer 14£235 GBP
Retailer 2£250 GBP
Retailer 6£262 GBP
Retailer 15£274 GBP
Retailer 5£381 GBP
Retailer 16£383 GBP
Retailer 7£434 GBP
Retailer 12£464 GBP
Retailer 8£483 GBP
Retailer 9£490 GBP
MOH London£674 GBP

39 data points across 16 retailers

16 retailers£117 GBP to £674 GBP

A
Cheapest Retailer
-
£117 GBP
A
Retailer 2
-
£135 GBP
View
Retailer 3
-
£144 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£144 GBP
View
A
Retailer 5
-
£235 GBP
View
B+
Retailer 6
-
£250 GBP
View
B+
Retailer 7
-
£262 GBP
View
B+
Retailer 8
-
£274 GBP
View
B+
Retailer 9
-
£381 GBP
View
B+
Retailer 10
-
£383 GBP
View
B
Retailer 11
-
£434 GBP
View
B
Retailer 12
-
£464 GBP
View
B
Retailer 13
-
£483 GBP
View
B
Retailer 14
-
£490 GBP
View
B
Retailer 15
-
£529 GBP
View
Most Expensive
B
MOH London
LG677505605 · Nov 4
£674 GBP
View
15 more retailers have this diamond
Prices start from £117 GBPSave up to £557 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 Asscher
£117 GBP