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Cushion|Lab Grown|IGI

1.28ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG689562553

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG689562553

Diamond specifications and retailer prices

From £211 GBP
$283 USD
As of October 30, 2026
Save £1,284 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,496 GBP at Yadav Diamonds · As of October 19, 2026
View at Yadav Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG689562553 or 689562553. Listed at 16 retailers as of October 30, 2026, with a 608% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562553
Dimensions6.23 × 6.23 × 4.30 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.23 mm6.23 mm1.28 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562553
Side View
Table 63.0%Crown 37.8°Girdle: MED-STKPavilion 42.6°Culet: NoneDepth 69.0%

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: £447 GBP|Low: £162 GBP|High: £1,496 GBP|Avg: £590 GBP|+3.6%
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
Yadav Diamonds
October 31, 2026
Retailer 3£211 GBP
Retailer 5£276 GBP
Retailer 7£340 GBP
Retailer 10£355 GBP
Retailer 1£447 GBP
Retailer 12£470 GBP
Retailer 2£480 GBP
Retailer 6£503 GBP
Retailer 9£571 GBP
Retailer 4£725 GBP
Retailer 13£793 GBP
Retailer 11£941 GBP
Retailer 8£1,008 GBP
Yadav Diamonds£1,496 GBP

40 data points across 14 retailers

16 retailers£211 GBP to £1,496 GBP

A
Cheapest Retailer
-
£211 GBP
$283 USD
Final sale: no returns
B+
Retailer 2
-
£276 GBP
$370 USD
View
A
Retailer 3
-
£340 GBP
€434 EUR
View
A
Retailer 4
-
£355 GBP
$475 USD
View
A
Retailer 5
-
£447 GBP
View
A
Retailer 6
-
£470 GBP
$630 USD
View
A
Retailer 7
-
£480 GBP
$643 USD
View
B+
Retailer 8
-
£503 GBP
$674 USD
View
B+
Retailer 9
-
£571 GBP
A$1,177 AUD
View
B+
Retailer 10
-
£725 GBP
SGD 1,312 SGD
View
B
Retailer 11
-
£793 GBP
$1,062 USD
View
B+
Retailer 12
-
£941 GBP
View
B
Retailer 13
-
£1,008 GBP
$1,350 USD
View
B
Retailer 14
-
£1,496 GBP
$2,004 USD
View
Retailer 15
-
£1,496 GBP
$2,004 USD
View
Price last confirmed 26 days ago
Most Expensive
Yadav Diamonds
13316896 · Oct 19
£1,496 GBP
$2,004 USD
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from £211 GBPSave up to £1,284 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
1.28ct Cushion
£211 GBP