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Radiant|Lab Grown|IGI

1.00ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825633175

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

Certificate IGI LG825633175

Diamond specifications and retailer prices

From £280 GBP
$375 USD
As of October 30, 2026
Save £1,661 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,940 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825633175 or 825633175. Listed at 16 retailers as of October 30, 2026, with prices from £280 to £1,940, a £1,661 spread on the same certified stone. Brilliant Earth lists it at £1,940. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.4°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825633175
Dimensions6.85 × 4.88 × 3.36 mm
L/W Ratio1.40
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
6.85 mm4.88 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825633175
Side View
Table 71.0%Crown 27.4°Girdle: STK-THKPavilion 34.3°Culet: NoneDepth 68.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £358 GBP|Low: £280 GBP|High: £1,373 GBP|Avg: £747 GBP|-0.3%
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 1, 2026
Retailer 14£280 GBP
Retailer 10£313 GBP
Retailer 15£313 GBP
Retailer 3£347 GBP
Retailer 1£358 GBP
Retailer 6£449 GBP
Retailer 11£459 GBP
Retailer 12£466 GBP
Retailer 5£571 GBP
Retailer 8£628 GBP
Retailer 13£974 GBP
Retailer 9£1,117 GBP
Retailer 7£1,145 GBP
Retailer 2£1,308 GBP
Retailer 4£1,358 GBP

40 data points across 15 retailers

16 retailers£280 GBP to £1,940 GBP

A
Cheapest Retailer
-
£280 GBP
$375 USD
A
Retailer 2
-
£313 GBP
$420 USD
View
Final sale: no returns
A
Retailer 3
-
£313 GBP
$420 USD
View
A
Retailer 4
-
£347 GBP
$465 USD
View
A
Retailer 5
-
£358 GBP
View
B+
Retailer 6
-
£449 GBP
$601 USD
View
B+
Retailer 7
-
£459 GBP
$615 USD
View
B+
Retailer 8
-
£466 GBP
$625 USD
View
B+
Retailer 9
-
£571 GBP
$765 USD
View
B+
Retailer 10
-
£628 GBP
View
B
Retailer 11
-
£974 GBP
$1,305 USD
View
B
Retailer 12
-
£1,117 GBP
$1,496 USD
View
B
Retailer 13
-
£1,145 GBP
$1,534 USD
View
B
Retailer 14
-
£1,308 GBP
$1,753 USD
View
Retailer 15
-
£1,358 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
22411353A · Oct 31
£1,940 GBP
$2,600 USD
View
15 more retailers have this diamond
Prices start from £280 GBPSave up to £1,661 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
1.00ct Radiant
£280 GBP