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Radiant|Lab Grown|IGI

1.03ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG492135837

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

Certificate IGI LG492135837

Diamond specifications and retailer prices

From £105 GBP
As of November 4, 2026
Save £897 GBP (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £1,001 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG492135837 or 492135837. Listed at 27 retailers as of November 6, 2026, with prices from £105 to £1,001, a £897 spread on the same certified stone. Do Amore Diamonds lists it at £1,001. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492135837
Dimensions7.35 × 4.96 × 3.33 mm
L/W Ratio1.48
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
7.35 mm4.96 mm1.03 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492135837
Side View
Table 59.5%Crown 35.3°Girdle: ThickPavilion 33.2°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £248 GBP|Low: £105 GBP|High: £762 GBP|Avg: £324 GBP|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£105 GBP
Retailer 11£117 GBP
Retailer 10£203 GBP
Retailer 1£248 GBP
Retailer 7£252 GBP
Retailer 6£272 GBP
Retailer 3£291 GBP
Retailer 2£314 GBP
Retailer 8£441 GBP
Retailer 5£478 GBP
Retailer 4£668 GBP

44 data points across 11 retailers

27 retailers£105 GBP to £1,001 GBP

A
Cheapest Retailer
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£105 GBP
Retailer 2
-
£105 GBP
View
Price last confirmed 30 days ago
Retailer 3
-
£105 GBP
View
Price last confirmed 38 days ago
A
Retailer 4
-
£105 GBP
View
A
Retailer 5
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£117 GBP
View
Final sale: no returns
Retailer 6
-
£122 GBP
View
Price last confirmed 41 days ago
Retailer 7
-
£128 GBP
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Price last confirmed 39 days ago
Retailer 8
-
£130 GBP
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Price last confirmed 35 days ago
A
Retailer 9
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£191 GBP
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B+
Retailer 10
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£203 GBP
View
A
Retailer 11
-
£220 GBP
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A
Retailer 12
-
£248 GBP
View
A
Retailer 13
-
£252 GBP
View
A
Retailer 14
-
£272 GBP
View
B+
Retailer 15
-
£291 GBP
View
B+
Retailer 16
-
£314 GBP
View
B
Retailer 17
-
£441 GBP
View
B
Retailer 18
-
£442 GBP
View
B
Retailer 19
-
£460 GBP
View
Retailer 20
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£460 GBP
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Price last confirmed 28 days ago
Retailer 21
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£460 GBP
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Price last confirmed 38 days ago
B
Retailer 22
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£460 GBP
View
B
Retailer 23
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£478 GBP
View
B
Retailer 24
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£539 GBP
View
B
Retailer 25
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£590 GBP
View
B
Retailer 26
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£668 GBP
View
Most Expensive
B
Do Amore Diamonds
27-085836A3E · Nov 6
£1,001 GBP
$1,340 USD
View
26 more retailers have this diamond
Prices start from £105 GBPSave up to £897 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 Radiant
£105 GBP