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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG764604591

Shape and cutting style on the report: Round brilliant

Certificate IGI LG764604591

Diamond specifications and retailer prices

From £103 GBP
As of November 5, 2026
Save £639 GBP (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £742 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG764604591 or 764604591. Listed at 20 retailers as of November 4, 2026, with prices from £103 to £742, a £639 spread on the same certified stone. Reve Diamonds lists it at £742. 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

1.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764604591
Dimensions6.51 × 6.48 × 4.05 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
6.51 mm6.48 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG764604591
Side View
Table 56.0%Crown 35.8°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £214 GBP|Low: £100 GBP|High: £746 GBP|Avg: £303 GBP|+4.7%
Retailer 1
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Retailer 18
Reve Diamonds
November 6, 2026
Retailer 18£103 GBP
Retailer 4£115 GBP
Retailer 16£120 GBP
Retailer 5£128 GBP
Retailer 17£128 GBP
Retailer 1£214 GBP
Retailer 10£215 GBP
Retailer 14£228 GBP
Retailer 6£239 GBP
Retailer 13£303 GBP
Retailer 15£305 GBP
Retailer 12£327 GBP
Retailer 7£356 GBP
Retailer 9£364 GBP
Retailer 3£367 GBP
Retailer 2£412 GBP
Retailer 8£452 GBP
Retailer 11£597 GBP
Reve Diamonds£742 GBP

42 data points across 19 retailers

20 retailers£103 GBP to £742 GBP

A
Cheapest Retailer
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£103 GBP
A
Retailer 2
-
£115 GBP
View
Final sale: no returns
A
Retailer 3
-
£120 GBP
View
Retailer 4
-
£128 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£128 GBP
View
A
Retailer 6
-
£214 GBP
View
A
Retailer 7
-
£215 GBP
View
A
Retailer 8
-
£228 GBP
View
A
Retailer 9
-
£239 GBP
View
B+
Retailer 10
-
£303 GBP
View
Retailer 11
-
£305 GBP
View
Price last confirmed 12 days ago
Retailer 12
-
£321 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
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£327 GBP
View
B
Retailer 14
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£356 GBP
View
B+
Retailer 15
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£364 GBP
View
B+
Retailer 16
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£367 GBP
View
B
Retailer 17
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£412 GBP
View
B
Retailer 18
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£452 GBP
View
B
Retailer 19
-
£597 GBP
View
Most Expensive
B
Reve Diamonds
E37388FB0 · Nov 4
£742 GBP
$999 USD
View
19 more retailers have this diamond
Prices start from £103 GBPSave up to £639 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
1.05ct Round
£103 GBP