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Radiant|Lab Grown|IGI

1.15ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG514249750

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

Certificate IGI LG514249750

Diamond specifications and retailer prices

From £140 GBP
As of November 6, 2026
Save £625 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,345 GBP at Do Amore Diamonds · As of November 6, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514249750 or 514249750. Listed at 15 retailers as of November 5, 2026, with a 448% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.2°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514249750
Dimensions7.33 × 5.11 × 3.57 mm
L/W Ratio1.43
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
7.33 mm5.11 mm1.15 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514249750
Side View
Table 66.5%Crown 47.2°Girdle: Slightly ThickPavilion 35.6°Culet: NoneDepth 69.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,345 GBP|Low: £140 GBP|High: £1,345 GBP|Avg: £442 GBP|+25.0%
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
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Retailer 17
November 6, 2026
Retailer 4£140 GBP
Retailer 14£162 GBP
Retailer 6£173 GBP
Retailer 17£173 GBP
Retailer 5£213 GBP
Retailer 2£251 GBP
Retailer 9£294 GBP
Retailer 16£305 GBP
Retailer 10£349 GBP
Retailer 12£407 GBP
Retailer 15£412 GBP
Retailer 8£550 GBP
Retailer 13£560 GBP
Retailer 7£616 GBP
Retailer 3£744 GBP
Retailer 11£765 GBP
Do Amore Diamonds£1,345 GBP

32 data points across 17 retailers

15 retailers£140 GBP to £765 GBP

A
Cheapest Retailer
-
£140 GBP
A
Retailer 2
-
£162 GBP
View
A
Retailer 3
-
£173 GBP
View
Retailer 4
-
£173 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
£213 GBP
View
A
Retailer 6
-
£251 GBP
View
A
Retailer 7
-
£305 GBP
View
B+
Retailer 8
-
£349 GBP
View
B+
Retailer 9
-
£407 GBP
View
B+
Retailer 10
-
£412 GBP
View
B
Retailer 11
-
£560 GBP
View
B
Retailer 12
-
£616 GBP
View
B
Retailer 13
-
£744 GBP
View
B
Retailer 14
-
£765 GBP
View
Most Expensive
Do Amore Diamonds
27-6846E020A · Nov 6
£1,345 GBP
$1,800 USD
View
Price under review
14 more retailers have this diamond
Prices start from £140 GBPSave up to £625 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
£140 GBP