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Radiant|Lab Grown|IGI

1.64ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804668362

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

Certificate IGI LG804668362

Diamond specifications and retailer prices

From £698 GBP
$937 USD
As of November 1, 2026
Save £2,514 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,212 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown radiant diamond

This 1.64ct 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 LG804668362 or 804668362. Listed at 8 retailers as of November 1, 2026, with prices from £698 to £3,212, a £2,514 spread on the same certified stone. Do Amore Diamonds lists it at £3,212. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804668362
Dimensions8.21 × 5.86 × 3.98 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
8.21 mm5.86 mm1.64 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804668362
Side View
Table 66.0%Crown 43.7°Girdle: MediumPavilion 39.8°Culet: NoneDepth 67.9%

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: Nov 1
Current: £3,212 GBP|Low: £372 GBP|High: £3,875 GBP|Avg: £1,541 GBP|-12.2%
Do Amore Diamonds
Retailer 2
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November 2, 2026
Retailer 3£372 GBP
Retailer 6£405 GBP
Retailer 14£698 GBP
Retailer 12£700 GBP
Retailer 18£741 GBP
Retailer 17£923 GBP
Retailer 5£968 GBP
Retailer 4£1,012 GBP
Retailer 10£1,099 GBP
Retailer 2£1,120 GBP
Retailer 16£1,482 GBP
Retailer 7£1,704 GBP
Retailer 8£2,032 GBP
Retailer 11£2,066 GBP
Retailer 9£2,408 GBP
Retailer 13£2,712 GBP
Retailer 15£2,914 GBP
Do Amore Diamonds£3,212 GBP

16 data points across 18 retailers

8 retailers£698 GBP to £3,212 GBP

A
Cheapest Retailer
-
£698 GBP
$937 USD
A
Retailer 2
-
£700 GBP
$940 USD
View
B+
Retailer 3
-
£1,120 GBP
$1,503 USD
View
B+
Retailer 4
-
£1,482 GBP
$1,989 USD
View
B+
Retailer 5
-
£2,066 GBP
View
B
Retailer 6
-
£2,712 GBP
$3,640 USD
View
B
Retailer 7
-
£2,914 GBP
$3,910 USD
View
Most Expensive
B
Do Amore Diamonds
27-457A5424F · Nov 1
£3,212 GBP
$4,310 USD
View
7 more retailers have this diamond
Prices start from £698 GBPSave up to £2,514 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
1.64ct Radiant
£698 GBP