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Radiant|Lab Grown|IGI

1.05ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG621407925

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

Certificate IGI LG621407925

Diamond specifications and retailer prices

From £139 GBP
$187 USD
As of November 2, 2026
Save £1,202 GBP (90%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £1,341 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG621407925 or 621407925. Listed at 26 retailers as of November 2, 2026, with prices from £139 to £1,341, a £1,202 spread on the same certified stone. Do Amore Diamonds lists it at £1,341. 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

1.05
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621407925
Dimensions7.38 × 5.12 × 3.33 mm
L/W Ratio1.44
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
7.38 mm5.12 mm1.05 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621407925
Side View
Table 58.0%Crown 38.4°Girdle: MediumPavilion 34.7°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £351 GBP|Low: £134 GBP|High: £1,833 GBP|Avg: £498 GBP|+3.3%
Retailer 1
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 2, 2026
Retailer 4£139 GBP
Retailer 11£158 GBP
Retailer 15£162 GBP
Retailer 3£173 GBP
Retailer 7£270 GBP
Retailer 10£324 GBP
Retailer 8£329 GBP
Retailer 1£351 GBP
Retailer 14£466 GBP
Retailer 6£557 GBP
Retailer 5£613 GBP
Retailer 13£762 GBP
Retailer 9£765 GBP
Retailer 2£984 GBP
Retailer 12£991 GBP

40 data points across 15 retailers

26 retailers£139 GBP to £1,341 GBP

A
Cheapest Retailer
-
£139 GBP
$187 USD
A
Retailer 2
-
£158 GBP
$212 USD
View
Final sale: no returns
A
Retailer 3
-
£162 GBP
$217 USD
View
A
Retailer 4
-
£173 GBP
$232 USD
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A
Retailer 5
-
£270 GBP
$362 USD
View
A
Retailer 6
-
£277 GBP
HK$2,900 HKD
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A
Retailer 7
-
£324 GBP
€414 EUR
View
A
Retailer 8
-
£329 GBP
ZAR 7,140 ZAR
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A
Retailer 9
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£339 GBP
$455 USD
View
A
Retailer 10
-
£351 GBP
View
A
Retailer 11
-
£352 GBP
$472 USD
View
B+
Retailer 12
-
£410 GBP
$550 USD
View
B+
Retailer 13
-
£466 GBP
A$963 AUD
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B+
Retailer 14
-
£557 GBP
$748 USD
View
B+
Retailer 15
-
£613 GBP
$823 USD
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B+
Retailer 16
-
£668 GBP
SGD 1,211 SGD
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B
Retailer 17
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£742 GBP
$995 USD
View
B+
Retailer 18
-
£762 GBP
A$1,573 AUD
View
B
Retailer 19
-
£765 GBP
View
B
Retailer 20
-
£859 GBP
$1,153 USD
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B
Retailer 21
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£965 GBP
$1,295 USD
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B
Retailer 22
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£984 GBP
$1,320 USD
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B
Retailer 23
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£991 GBP
$1,330 USD
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B
Retailer 24
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£995 GBP
$1,335 USD
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B
Retailer 25
-
£1,209 GBP
View
Most Expensive
B
Do Amore Diamonds
27-7C5EE10BF · Nov 2
£1,341 GBP
$1,800 USD
View
25 more retailers have this diamond
Prices start from £139 GBPSave up to £1,202 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
1.05ct Radiant
£139 GBP