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Round|Lab Grown|IGI

1.30ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG773623964

Shape and cutting style on the report: Round brilliant

Certificate IGI LG773623964

Diamond specifications and retailer prices

From £330 GBP
As of November 1, 2026
5 retailers carry this diamond
Most expensive: £530 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG773623964 or 773623964. Listed at 5 retailers as of November 1, 2026. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773623964
Dimensions7.03 × 7.00 × 4.29 mm
L/W Ratio1.00
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
7.03 mm7.00 mm1.30 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773623964
Side View
Table 59.0%Crown 33.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.2%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: £330 GBP|Low: £106 GBP|High: £837 GBP|Avg: £371 GBP|-25.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 8, 2026
Retailer 4£149 GBP
Retailer 7£165 GBP
Retailer 9£223 GBP
Retailer 6£278 GBP
Retailer 2£285 GBP
Retailer 1£330 GBP
Retailer 10£343 GBP
Retailer 11£357 GBP
Retailer 5£377 GBP
Retailer 3£571 GBP
Retailer 8£837 GBP

52 data points across 11 retailers

5 retailers

Retailer 1
-
£133 GBP
Price last confirmed 49 days ago
Retailer 2
-
£163 GBP
View
Price last confirmed 48 days ago
B+
Retailer 3
-
£330 GBP
View
Retailer 4
-
£357 GBP
View
Price last confirmed 82 days ago
Most Expensive
NZ Jewellers
a9ddad0d-5212-4c4e-ba30-522f91fe0158 · Sep 21
£530 GBP
$714 USD
View
Price last confirmed 46 days ago
4 more retailers have this diamond
Prices start from £330 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.

B+
1.30ct Round
£330 GBP