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Radiant|Lab Grown|IGI

1.85ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG794625454

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

Certificate IGI LG794625454

Diamond specifications and retailer prices

From £463 GBP
$620 USD
As of October 30, 2026
Save £2,754 GBP (86%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £4,560 GBP at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.85ct lab-grown radiant diamond

This 1.85ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG794625454 or 794625454. Listed at 24 retailers as of October 30, 2026, with a 595% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.85
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794625454
Dimensions8.38 × 6.22 × 4.27 mm
L/W Ratio1.35
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
8.38 mm6.22 mm1.85 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794625454
Side View
Table 66.0%Crown 41.8°Girdle: MediumPavilion 37.5°Culet: NoneDepth 68.6%

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: Oct 30
Current: £3,217 GBP|Low: £463 GBP|High: £4,426 GBP|Avg: £1,529 GBP|-27.3%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 21
October 30, 2026
Retailer 12£463 GBP
Retailer 20£518 GBP
Retailer 15£540 GBP
Retailer 11£574 GBP
Retailer 16£668 GBP
Retailer 3£739 GBP
Retailer 18£878 GBP
Retailer 2£899 GBP
Retailer 4£939 GBP
Retailer 13£986 GBP
Retailer 6£1,168 GBP
Retailer 5£1,248 GBP
Retailer 9£1,509 GBP
Retailer 7£1,672 GBP
Retailer 19£1,761 GBP
Retailer 8£1,854 GBP
Retailer 10£1,957 GBP
Retailer 21£2,064 GBP
Retailer 17£2,264 GBP
Brilliant Earth£3,217 GBP
Retailer 14£3,355 GBP

27 data points across 21 retailers

24 retailers£463 GBP to £3,217 GBP

A
Cheapest Retailer
-
£463 GBP
$620 USD
A
Retailer 2
-
£518 GBP
$694 USD
View
A
Retailer 3
-
£540 GBP
$723 USD
View
Final sale: no returns
A
Retailer 4
-
£574 GBP
$769 USD
View
Retailer 5
-
£593 GBP
$795 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£668 GBP
$895 USD
View
A
Retailer 7
-
£739 GBP
$990 USD
View
A
Retailer 8
-
£878 GBP
$1,177 USD
View
A
Retailer 9
-
£899 GBP
View
Retailer 10
-
£939 GBP
€1,198 EUR
View
Price last confirmed 7 days ago
A
Retailer 11
-
£986 GBP
ZAR 21,346 ZAR
View
B+
Retailer 12
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£1,168 GBP
$1,565 USD
View
B+
Retailer 13
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£1,248 GBP
$1,672 USD
View
B+
Retailer 14
-
£1,509 GBP
$2,022 USD
View
B+
Retailer 15
-
£1,672 GBP
View
B+
Retailer 16
-
£1,761 GBP
$2,360 USD
View
B+
Retailer 17
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£1,831 GBP
$2,453 USD
View
B+
Retailer 18
-
£1,854 GBP
$2,484 USD
View
B+
Retailer 19
-
£1,957 GBP
SGD 3,544 SGD
View
B+
Retailer 20
-
£2,064 GBP
$2,765 USD
View
B+
Retailer 21
-
£2,264 GBP
View
B
Retailer 22
-
£3,217 GBP
$4,310 USD
View
Retailer 23
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£3,355 GBP
$4,495 USD
View
Price last confirmed 9 days ago
Most Expensive
Brilliant Earth
20464582A · Sep 28
£4,560 GBP
$6,110 USD
View
Price last confirmed 32 days ago
23 more retailers have this diamond
Prices start from £463 GBPSave up to £2,754 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
1.85ct Radiant
£463 GBP