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Radiant|Lab Grown|IGI

1.15ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG574325826

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG574325826

Diamond specifications and retailer prices

From £112 GBP
As of November 6, 2026
Save £964 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,076 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.15ct lab-grown radiant diamond

This 1.15ct lab-grown radiant 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 LG574325826 or 574325826. Listed at 12 retailers as of November 2, 2026, with prices from £112 to £1,076, a £964 spread on the same certified stone. Do Amore Diamonds lists it at £1,076. 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

1.15
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574325826
Dimensions7.39 × 5.14 × 3.42 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.39 mm5.14 mm1.15 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574325826
Side View
Table 65.0%Crown 44.7°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 66.5%

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 6
Current: £1,076 GBP|Low: £88 GBP|High: £1,076 GBP|Avg: £394 GBP
Do Amore Diamonds
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
November 4, 2026
Retailer 11£112 GBP
Retailer 15£126 GBP
Retailer 14£130 GBP
Retailer 8£198 GBP
Retailer 6£248 GBP
Retailer 13£256 GBP
Retailer 3£288 GBP
Retailer 2£329 GBP
Retailer 7£353 GBP
Retailer 10£471 GBP
Retailer 12£492 GBP
Retailer 4£513 GBP
Retailer 5£516 GBP
Retailer 9£715 GBP
Do Amore Diamonds£1,076 GBP

39 data points across 15 retailers

12 retailers£112 GBP to £1,076 GBP

A
Cheapest Retailer
-
£112 GBP
A
Retailer 2
-
£126 GBP
View
Final sale: no returns
A
Retailer 3
-
£130 GBP
View
A
Retailer 4
-
£198 GBP
View
B+
Retailer 5
-
£256 GBP
View
B+
Retailer 6
-
£329 GBP
View
Retailer 7
-
£349 GBP
View
Price last confirmed 59 days ago
B+
Retailer 8
-
£392 GBP
View
B+
Retailer 9
-
£471 GBP
View
B+
Retailer 10
-
£492 GBP
View
B
Retailer 11
-
£715 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0866E438A · Nov 2
£1,076 GBP
$1,440 USD
View
11 more retailers have this diamond
Prices start from £112 GBPSave up to £964 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
1.15ct Radiant
£112 GBP