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Cushion|Lab Grown|IGI

1.35ct D VS1 Cushion Lab Grown Diamond

GD • D/VS1 • IGI LG625437503

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG625437503

Diamond specifications and retailer prices

From £231 GBP
$310 USD
As of October 30, 2026
Save £1,597 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,829 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.35ct lab-grown cushion diamond

This 1.35ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG625437503 or 625437503. Listed at 11 retailers as of October 29, 2026, with prices from £231 to £1,829, a £1,597 spread on the same certified stone. Do Amore Diamonds lists it at £1,829. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.35
Carat
D
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625437503
Dimensions6.48 × 6.42 × 4.33 mm
L/W Ratio1.01
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
6.48 mm6.42 mm1.35 ctD / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625437503
Side View
Table 59.0%Crown 35.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 67.4%

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: £1,791 GBP|Low: £231 GBP|High: £1,791 GBP|Avg: £668 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9£231 GBP
Retailer 10£360 GBP
Retailer 6£362 GBP
Retailer 2£378 GBP
Retailer 7£422 GBP
Retailer 8£446 GBP
Retailer 4£689 GBP
Retailer 5£690 GBP
Retailer 3£1,137 GBP
Do Amore Diamonds£1,791 GBP

36 data points across 10 retailers

11 retailers£231 GBP to £1,829 GBP

A
Cheapest Retailer
-
£231 GBP
$310 USD
Final sale: no returns
B+
Retailer 2
-
£360 GBP
$482 USD
View
A
Retailer 3
-
£362 GBP
$485 USD
View
A
Retailer 4
-
£378 GBP
View
B+
Retailer 5
-
£422 GBP
$566 USD
View
B+
Retailer 6
-
£446 GBP
$598 USD
View
B
Retailer 7
-
£689 GBP
A$1,420 AUD
View
Retailer 8
-
£690 GBP
$925 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
£1,137 GBP
View
C
Retailer 10
-
£1,791 GBP
$2,400 USD
View
Most Expensive
C
Do Amore Diamonds
27-7203F7911 · Oct 29
£1,829 GBP
$2,450 USD
View
10 more retailers have this diamond
Prices start from £231 GBPSave up to £1,597 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
1.35ct Cushion
£231 GBP