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Round|Lab Grown|IGI

1.30ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG757504789

Shape and cutting style on the report: Round brilliant

Certificate IGI LG757504789

Diamond specifications and retailer prices

From £315 GBP
As of November 6, 2026
Save £533 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £848 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG757504789 or 757504789. Listed at 7 retailers as of November 2, 2026, with prices from £315 to £848, a £533 spread on the same certified stone. MOH London lists it at £848. 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

1.30
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757504789
Dimensions7.00 × 6.96 × 4.33 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
7.00 mm6.96 mm1.30 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757504789
Side View
Table 59.0%Crown 33.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £848 GBP|Low: £294 GBP|High: £849 GBP|Avg: £424 GBP|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£303 GBP
Retailer 5£315 GBP
Retailer 3£323 GBP
Retailer 2£325 GBP
Retailer 4£366 GBP
Retailer 7£412 GBP
MOH London£848 GBP

44 data points across 7 retailers

7 retailers£315 GBP to £848 GBP

Retailer 1
-
£303 GBP
Price last confirmed 8 days ago
A
Retailer 2
-
£315 GBP
View
A
Retailer 3
-
£323 GBP
View
A
Retailer 4
-
£325 GBP
View
B+
Retailer 5
-
£366 GBP
View
B+
Retailer 6
-
£412 GBP
View
Most Expensive
B
MOH London
LG757504789 · Nov 2
£848 GBP
View
6 more retailers have this diamond
Prices start from £315 GBPSave up to £533 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
1.30ct Round
£315 GBP