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Round|Lab Grown|IGI

1.03ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG778630870

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778630870

Diamond specifications and retailer prices

From £143 GBP
$191 USD
As of November 1, 2026
Save £685 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £827 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778630870 or 778630870. Listed at 20 retailers as of November 1, 2026, with prices from £143 to £827, a £685 spread on the same certified stone. MOH London lists it at £827. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
G
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778630870
Dimensions6.55 × 6.51 × 3.93 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.55 mm6.51 mm1.03 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778630870
Side View
Table 59.0%Crown 33.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.2%

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 1
Current: £827 GBP|Low: £143 GBP|High: £848 GBP|Avg: £396 GBP|-2.5%
MOH London
Retailer 2
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Retailer 20
November 1, 2026
Retailer 13£143 GBP
Retailer 4£160 GBP
Retailer 3£166 GBP
Retailer 16£177 GBP
Retailer 12£179 GBP
Retailer 14£296 GBP
Retailer 2£306 GBP
Retailer 5£310 GBP
Retailer 15£319 GBP
Retailer 19£411 GBP
Retailer 9£436 GBP
Retailer 10£457 GBP
Retailer 17£458 GBP
Retailer 6£481 GBP
Retailer 18£569 GBP
Retailer 7£602 GBP
Retailer 8£609 GBP
Retailer 11£679 GBP
Retailer 20£813 GBP
MOH London£827 GBP

23 data points across 20 retailers

20 retailers£143 GBP to £827 GBP

A
Cheapest Retailer
-
£143 GBP
$191 USD
A
Retailer 2
-
£160 GBP
$214 USD
View
Final sale: no returns
A
Retailer 3
-
£166 GBP
$222 USD
View
A
Retailer 4
-
£177 GBP
$237 USD
View
Retailer 5
-
£179 GBP
$240 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
£296 GBP
View
A
Retailer 7
-
£306 GBP
ZAR 6,616 ZAR
View
A
Retailer 8
-
£310 GBP
$415 USD
View
A
Retailer 9
-
£319 GBP
View
B+
Retailer 10
-
£411 GBP
$551 USD
View
B+
Retailer 11
-
£436 GBP
A$899 AUD
View
B+
Retailer 12
-
£457 GBP
$612 USD
View
B+
Retailer 13
-
£458 GBP
$613 USD
View
B+
Retailer 14
-
£481 GBP
SGD 871 SGD
View
B+
Retailer 15
-
£569 GBP
$763 USD
View
B
Retailer 16
-
£602 GBP
$806 USD
View
B+
Retailer 17
-
£609 GBP
$816 USD
View
Retailer 18
-
£679 GBP
$910 USD
View
Price last confirmed 11 days ago
B
Retailer 19
-
£813 GBP
$1,090 USD
View
Most Expensive
B
MOH London
LG778630870 · Nov 1
£827 GBP
View
19 more retailers have this diamond
Prices start from £143 GBPSave up to £685 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
1.03ct Round
£143 GBP