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Radiant|Lab Grown|IGI

4.56ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG731531300

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

Certificate IGI LG731531300

Diamond specifications and retailer prices

From £3,791 GBP
$5,048 USD
As of October 30, 2026
Save £22,289 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £26,080 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.56ct lab-grown radiant diamond

This 4.56ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731531300 or 731531300. Listed at 23 retailers as of October 29, 2026, with prices from £3,791 to £26,080, a £22,289 spread on the same certified stone. Do Amore Diamonds lists it at £26,080. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.56
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731531300
Dimensions11.72 × 8.08 × 5.51 mm
L/W Ratio1.45
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
11.72 mm8.08 mm4.56 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731531300
Side View
Table 63.0%Crown 47.1°Girdle: MediumPavilion 32.6°Culet: NoneDepth 68.2%

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: £26,080 GBP|Low: £3,639 GBP|High: £26,080 GBP|Avg: £8,356 GBP
Do Amore Diamonds
Retailer 2
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Retailer 23
October 30, 2026
Retailer 22£3,791 GBP
Retailer 6£3,973 GBP
Retailer 9£4,060 GBP
Retailer 12£4,245 GBP
Retailer 3£4,397 GBP
Retailer 7£4,397 GBP
Retailer 21£4,415 GBP
Retailer 14£4,534 GBP
Retailer 20£5,514 GBP
Retailer 5£5,762 GBP
Retailer 8£5,873 GBP
Retailer 2£6,232 GBP
Retailer 19£6,409 GBP
Retailer 4£6,797 GBP
Retailer 11£6,901 GBP
Retailer 17£9,930 GBP
Retailer 13£10,331 GBP
Retailer 18£10,720 GBP
Retailer 23£11,161 GBP
Retailer 15£12,104 GBP
Retailer 16£16,999 GBP
Retailer 10£17,143 GBP
Do Amore Diamonds£26,080 GBP

42 data points across 23 retailers

23 retailers£3,791 GBP to £26,080 GBP

A
Cheapest Retailer
-
£3,791 GBP
$5,048 USD
A
Retailer 2
-
£3,973 GBP
$5,291 USD
View
A
Retailer 3
-
£4,060 GBP
$5,406 USD
View
A
Retailer 4
-
£4,245 GBP
$5,653 USD
View
Final sale: no returns
A
Retailer 5
-
£4,397 GBP
$5,856 USD
View
Retailer 6
-
£4,397 GBP
$5,856 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
£4,415 GBP
$5,880 USD
View
A
Retailer 8
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£4,534 GBP
$6,038 USD
View
A
Retailer 9
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£5,514 GBP
$7,343 USD
View
A
Retailer 10
-
£5,762 GBP
$7,673 USD
View
A
Retailer 11
-
£5,873 GBP
HK$61,100 HKD
View
B+
Retailer 12
-
£6,232 GBP
View
B+
Retailer 13
-
£6,409 GBP
$8,535 USD
View
B+
Retailer 14
-
£6,797 GBP
$9,051 USD
View
B+
Retailer 15
-
£6,901 GBP
View
B+
Retailer 16
-
£9,930 GBP
View
B+
Retailer 17
-
£10,331 GBP
ZAR 222,257 ZAR
View
Retailer 18
-
£10,720 GBP
A$21,962 AUD
View
Price last confirmed 7 days ago
B
Retailer 19
-
£11,161 GBP
$14,863 USD
View
B
Retailer 20
-
£12,104 GBP
$16,119 USD
View
B
Retailer 21
-
£16,999 GBP
SGD 30,591 SGD
View
B
Retailer 22
-
£17,143 GBP
$22,829 USD
View
Most Expensive
B
Do Amore Diamonds
27-6167FFFBC · Oct 29
£26,080 GBP
$34,730 USD
View
22 more retailers have this diamond
Prices start from £3,791 GBPSave up to £22,289 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
4.56ct Radiant
£3,791 GBP