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Radiant|Lab Grown|IGI

1.61ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754594007

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

Certificate IGI LG754594007

Diamond specifications and retailer prices

From £202 GBP
$271 USD
As of October 30, 2026
Save £2,223 GBP (92%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,426 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.61ct lab-grown radiant diamond

This 1.61ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754594007 or 754594007. Listed at 17 retailers as of October 30, 2026, with prices from £202 to £2,426, a £2,223 spread on the same certified stone. Brilliant Earth lists it at £2,426. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.61
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594007
Dimensions8.43 × 8.43 × 5.74 mm
L/W Ratio1.00
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
8.43 mm8.43 mm1.61 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594007
Side View
Table 59.0%Crown 42.8°Girdle: Slightly ThickPavilion 34.4°Culet: NoneDepth 66.9%

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: £2,426 GBP|Low: £202 GBP|High: £3,567 GBP|Avg: £964 GBP|-32.0%
Brilliant Earth
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
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Retailer 17
October 31, 2026
Retailer 12£202 GBP
Retailer 5£234 GBP
Retailer 9£252 GBP
Retailer 13£382 GBP
Retailer 7£414 GBP
Retailer 16£416 GBP
Retailer 2£461 GBP
Retailer 3£650 GBP
Retailer 8£666 GBP
Retailer 15£771 GBP
Retailer 4£798 GBP
Retailer 17£890 GBP
Retailer 11£1,116 GBP
Retailer 10£1,286 GBP
Retailer 14£1,799 GBP
Retailer 6£2,079 GBP
Brilliant Earth£2,426 GBP

35 data points across 17 retailers

17 retailers£202 GBP to £2,426 GBP

A
Cheapest Retailer
-
£202 GBP
$271 USD
A
Retailer 2
-
£234 GBP
$314 USD
View
A
Retailer 3
-
£252 GBP
$338 USD
View
Final sale: no returns
A
Retailer 4
-
£382 GBP
$512 USD
View
A
Retailer 5
-
£414 GBP
$555 USD
View
A
Retailer 6
-
£416 GBP
$557 USD
View
A
Retailer 7
-
£461 GBP
€588 EUR
View
A
Retailer 8
-
£650 GBP
A$1,340 AUD
View
A
Retailer 9
-
£666 GBP
$893 USD
View
B+
Retailer 10
-
£771 GBP
$1,033 USD
View
A
Retailer 11
-
£798 GBP
$1,070 USD
View
B+
Retailer 12
-
£890 GBP
$1,193 USD
View
B+
Retailer 13
-
£1,116 GBP
View
B+
Retailer 14
-
£1,286 GBP
A$2,651 AUD
View
B
Retailer 15
-
£1,799 GBP
$2,410 USD
View
B
Retailer 16
-
£2,079 GBP
$2,785 USD
View
Most Expensive
B
Brilliant Earth
17388414Y · Oct 30
£2,426 GBP
$3,250 USD
View
16 more retailers have this diamond
Prices start from £202 GBPSave up to £2,223 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
1.61ct Radiant
£202 GBP