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Radiant|Lab Grown|IGI

1.67ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG744514675

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

Certificate IGI LG744514675

Diamond specifications and retailer prices

From £209 GBP
$280 USD
As of October 30, 2026
Save £2,343 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 31, 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 LG744514675 or 744514675. Listed at 17 retailers as of October 30, 2026, with prices from £209 to £2,552, a £2,343 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 angle39.2°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514675
Dimensions8.76 × 5.91 × 3.72 mm
L/W Ratio1.48
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
8.76 mm5.91 mm1.67 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514675
Side View
Table 65.0%Crown 39.2°Girdle: Slightly ThickPavilion 32°Culet: NoneDepth 62.9%

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: £2,552 GBP|Low: £209 GBP|High: £2,963 GBP|Avg: £968 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
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Retailer 17
October 31, 2026
Retailer 12£209 GBP
Retailer 4£243 GBP
Retailer 9£261 GBP
Retailer 13£392 GBP
Retailer 16£428 GBP
Retailer 7£429 GBP
Retailer 2£476 GBP
Retailer 11£668 GBP
Retailer 8£714 GBP
Retailer 15£797 GBP
Retailer 3£819 GBP
Retailer 17£920 GBP
Retailer 6£1,178 GBP
Retailer 10£1,334 GBP
Retailer 14£1,858 GBP
Retailer 5£2,157 GBP
Brilliant Earth£2,552 GBP

33 data points across 17 retailers

17 retailers£209 GBP to £2,552 GBP

A
Cheapest Retailer
-
£209 GBP
$280 USD
A
Retailer 2
-
£243 GBP
$325 USD
View
A
Retailer 3
-
£261 GBP
$350 USD
View
Final sale: no returns
A
Retailer 4
-
£392 GBP
$525 USD
View
A
Retailer 5
-
£428 GBP
$573 USD
View
A
Retailer 6
-
£429 GBP
$575 USD
View
A
Retailer 7
-
£476 GBP
€607 EUR
View
A
Retailer 8
-
£668 GBP
A$1,376 AUD
View
A
Retailer 9
-
£714 GBP
$957 USD
View
A
Retailer 10
-
£797 GBP
$1,068 USD
View
A
Retailer 11
-
£819 GBP
$1,098 USD
View
B+
Retailer 12
-
£920 GBP
$1,233 USD
View
Retailer 13
-
£1,178 GBP
View
Price last confirmed 12 days ago
B+
Retailer 14
-
£1,334 GBP
A$2,750 AUD
View
B
Retailer 15
-
£1,858 GBP
$2,490 USD
View
B
Retailer 16
-
£2,157 GBP
$2,890 USD
View
Most Expensive
B
Brilliant Earth
17388439Y · Oct 31
£2,552 GBP
$3,420 USD
View
16 more retailers have this diamond
Prices start from £209 GBPSave up to £2,343 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
£209 GBP