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Round|Lab Grown|IGI

1.29ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG530299181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG530299181

Diamond specifications and retailer prices

From £128 GBP
As of November 5, 2026
Save £1,098 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,226 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG530299181 or 530299181. Listed at 16 retailers as of November 5, 2026, with prices from £128 to £1,226, a £1,098 spread on the same certified stone. Do Amore Diamonds lists it at £1,226. 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

1.29
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530299181
Dimensions7.07 × 7.01 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.07 mm7.01 mm1.29 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530299181
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,226 GBP|Low: £128 GBP|High: £1,226 GBP|Avg: £363 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 6, 2026
Retailer 7£128 GBP
Retailer 6£143 GBP
Retailer 13£148 GBP
Retailer 3£158 GBP
Retailer 4£158 GBP
Retailer 5£236 GBP
Retailer 14£267 GBP
Retailer 8£287 GBP
Retailer 9£314 GBP
Retailer 15£331 GBP
Retailer 2£386 GBP
Retailer 11£449 GBP
Retailer 12£706 GBP
Retailer 10£815 GBP
Do Amore Diamonds£1,226 GBP

37 data points across 15 retailers

16 retailers£128 GBP to £1,226 GBP

A
Cheapest Retailer
-
£128 GBP
A
Retailer 2
-
£143 GBP
View
Final sale: no returns
A
Retailer 3
-
£148 GBP
View
A
Retailer 4
-
£158 GBP
View
Retailer 5
-
£158 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£236 GBP
View
A
Retailer 7
-
£267 GBP
View
A
Retailer 8
-
£287 GBP
View
A
Retailer 9
-
£314 GBP
View
Retailer 10
-
£331 GBP
View
Price last confirmed 16 days ago
A
Retailer 11
-
£386 GBP
View
B+
Retailer 12
-
£449 GBP
View
B+
Retailer 13
-
£562 GBP
View
B
Retailer 14
-
£706 GBP
View
B
Retailer 15
-
£815 GBP
View
Most Expensive
B
Do Amore Diamonds
27-59B8A7EDE · Nov 6
£1,226 GBP
$1,650 USD
View
15 more retailers have this diamond
Prices start from £128 GBPSave up to £1,098 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
1.29ct Round
£128 GBP