Radiant|Lab Grown|IGI

1.67ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG732520458

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

Certificate IGI LG732520458

Diamond specifications and retailer prices

From £202 GBP
$270 USD
As of October 30, 2026
Save £2,351 GBP (92%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,552 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.67ct lab-grown radiant diamond

This 1.67ct 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 LG732520458 or 732520458. Listed at 17 retailers as of October 30, 2026, with prices from £202 to £2,552, a £2,351 spread on the same certified stone. Brilliant Earth lists it at £2,552. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732520458
Dimensions8.70 × 5.84 × 3.86 mm
L/W Ratio1.49
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
8.70 mm5.84 mm1.67 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732520458
Side View
Table 65.0%Crown 36.7°Girdle: MediumPavilion 34.5°Culet: NoneDepth 66.1%

Caratlytics Score

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A+
Exceptional
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: £2,552 GBP|Low: £184 GBP|High: £2,963 GBP|Avg: £959 GBP|-13.9%
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 13£202 GBP
Retailer 5£234 GBP
Retailer 9£258 GBP
Retailer 14£383 GBP
Retailer 7£414 GBP
Retailer 17£414 GBP
Retailer 2£458 GBP
Retailer 12£642 GBP
Retailer 8£712 GBP
Retailer 16£768 GBP
Retailer 4£795 GBP
Retailer 3£887 GBP
Retailer 11£1,112 GBP
Retailer 10£1,334 GBP
Retailer 15£1,791 GBP
Retailer 6£2,157 GBP
Brilliant Earth£2,552 GBP

37 data points across 17 retailers

17 retailers£202 GBP to £2,552 GBP

A+
Cheapest Retailer
-
£202 GBP
$270 USD
A
Retailer 2
-
£234 GBP
$313 USD
View
A
Retailer 3
-
£258 GBP
$346 USD
View
Final sale: no returns
A
Retailer 4
-
£383 GBP
$513 USD
View
A
Retailer 5
-
£414 GBP
$555 USD
View
A
Retailer 6
-
£414 GBP
$555 USD
View
A
Retailer 7
-
£458 GBP
€585 EUR
View
A
Retailer 8
-
£642 GBP
A$1,323 AUD
View
A
Retailer 9
-
£712 GBP
$954 USD
View
A
Retailer 10
-
£768 GBP
$1,029 USD
View
A
Retailer 11
-
£795 GBP
$1,065 USD
View
A
Retailer 12
-
£887 GBP
$1,189 USD
View
B+
Retailer 13
-
£1,112 GBP
View
B+
Retailer 14
-
£1,334 GBP
A$2,750 AUD
View
B+
Retailer 15
-
£1,791 GBP
$2,400 USD
View
B
Retailer 16
-
£2,157 GBP
$2,890 USD
View
Most Expensive
B
Brilliant Earth
16112448Y · Oct 30
£2,552 GBP
$3,420 USD
View
16 more retailers have this diamond
Prices start from £202 GBPSave up to £2,351 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+
1.67ct Radiant
£202 GBP