CaratHunter
Plans
Cushion|Lab Grown|IGI

0.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG747589323

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG747589323

Diamond specifications and retailer prices

From £172 GBP
$230 USD
As of October 30, 2026
Save £1,299 GBP (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,470 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG747589323 or 747589323. Listed at 23 retailers as of October 30, 2026, with prices from £172 to £1,470, a £1,299 spread on the same certified stone. Do Amore Diamonds lists it at £1,470. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747589323
Dimensions5.62 × 4.43 × 2.76 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.62 mm4.43 mm0.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747589323
Side View
Table 62.0%Crown 35.4°Girdle: MED-THKPavilion 36.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £338 GBP|Low: £190 GBP|High: £851 GBP|Avg: £431 GBP|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 12£190 GBP
Retailer 5£251 GBP
Retailer 2£284 GBP
Retailer 1£338 GBP
Retailer 3£358 GBP
Retailer 7£373 GBP
Retailer 9£379 GBP
Retailer 6£392 GBP
Retailer 8£415 GBP
Retailer 13£427 GBP
Retailer 10£535 GBP
Retailer 4£648 GBP
Retailer 11£845 GBP

39 data points across 13 retailers

23 retailers£172 GBP to £1,470 GBP

A
Cheapest Retailer
-
£172 GBP
$230 USD
Final sale: no returns
A
Retailer 2
-
£190 GBP
$255 USD
View
A
Retailer 3
-
£204 GBP
$273 USD
View
A
Retailer 4
-
£251 GBP
$336 USD
View
A
Retailer 5
-
£284 GBP
$380 USD
View
A
Retailer 6
-
£338 GBP
€431 EUR
View
Retailer 7
-
£358 GBP
A$737 AUD
View
Price last confirmed 23 days ago
A
Retailer 8
-
£373 GBP
$500 USD
View
A
Retailer 9
-
£379 GBP
ZAR 8,211 ZAR
View
A
Retailer 10
-
£392 GBP
View
A
Retailer 11
-
£415 GBP
View
B+
Retailer 12
-
£427 GBP
$572 USD
View
B+
Retailer 13
-
£432 GBP
$579 USD
View
B+
Retailer 14
-
£535 GBP
A$1,102 AUD
View
B+
Retailer 15
-
£594 GBP
CA$1,105 CAD
View
B+
Retailer 16
-
£648 GBP
$868 USD
View
B
Retailer 17
-
£701 GBP
$939 USD
View
B
Retailer 18
-
£802 GBP
$1,075 USD
View
B
Retailer 19
-
£802 GBP
$1,075 USD
View
Retailer 20
-
£845 GBP
View
Price last confirmed 10 days ago
B
Retailer 21
-
£904 GBP
$1,211 USD
View
B
Retailer 22
-
£1,179 GBP
$1,580 USD
View
Most Expensive
B
Do Amore Diamonds
27-9B840A981 · Oct 30
£1,470 GBP
$1,970 USD
View
22 more retailers have this diamond
Prices start from £172 GBPSave up to £1,299 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
0.51ct Cushion
£172 GBP