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Round|Lab Grown|IGI

1.02ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG665405860

Shape and cutting style on the report: Round brilliant

Certificate IGI LG665405860

Diamond specifications and retailer prices

From £108 GBP
As of November 5, 2026
Save £648 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £756 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.02ct lab-grown round diamond

This 1.02ct 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 LG665405860 or 665405860. Listed at 23 retailers as of November 4, 2026, with prices from £108 to £756, a £648 spread on the same certified stone. Reve Diamonds lists it at £756. 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

1.02
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665405860
Dimensions6.55 × 6.50 × 3.97 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
6.55 mm6.50 mm1.02 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665405860
Side View
Table 57.0%Crown 34.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.8%

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: £227 GBP|Low: £107 GBP|High: £756 GBP|Avg: £300 GBP|+6.3%
Retailer 1
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
Reve Diamonds
November 6, 2026
Retailer 6£108 GBP
Retailer 13£120 GBP
Retailer 14£125 GBP
Retailer 2£133 GBP
Retailer 4£133 GBP
Retailer 1£227 GBP
Retailer 10£238 GBP
Retailer 3£247 GBP
Retailer 12£262 GBP
Retailer 16£315 GBP
Retailer 15£342 GBP
Retailer 8£357 GBP
Retailer 7£429 GBP
Retailer 11£452 GBP
Retailer 5£470 GBP
Retailer 9£621 GBP
Reve Diamonds£756 GBP

44 data points across 17 retailers

23 retailers£108 GBP to £756 GBP

Retailer 1
-
£107 GBP
Price last confirmed 45 days ago
A
Retailer 2
-
£108 GBP
View
A
Retailer 3
-
£120 GBP
View
Final sale: no returns
A
Retailer 4
-
£125 GBP
View
Retailer 5
-
£131 GBP
View
Price last confirmed 45 days ago
Retailer 6
-
£133 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£133 GBP
View
A
Retailer 8
-
£206 GBP
View
A
Retailer 9
-
£227 GBP
View
A
Retailer 10
-
£238 GBP
View
B+
Retailer 11
-
£247 GBP
View
B+
Retailer 12
-
£262 GBP
View
Retailer 13
-
£301 GBP
View
Price last confirmed 58 days ago
B+
Retailer 14
-
£315 GBP
View
B
Retailer 15
-
£342 GBP
View
B+
Retailer 16
-
£357 GBP
View
B+
Retailer 17
-
£358 GBP
View
Retailer 18
-
£425 GBP
View
Price last confirmed 46 days ago
B
Retailer 19
-
£429 GBP
View
B
Retailer 20
-
£452 GBP
View
B
Retailer 21
-
£470 GBP
View
B
Retailer 22
-
£621 GBP
View
Most Expensive
B
Reve Diamonds
D58D8D9DF · Nov 4
£756 GBP
$1,017 USD
View
22 more retailers have this diamond
Prices start from £108 GBPSave up to £648 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
1.02ct Round
£108 GBP