CaratHunter
Plans
Cushion|Lab Grown|IGI

1.54ct I SI1 Cushion Lab Grown Diamond

VG • I/SI1 • IGI LG651492620

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG651492620

Diamond specifications and retailer prices

From £339 GBP
As of November 1, 2026
Save £1,273 GBP (79%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,612 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.54ct lab-grown cushion diamond

This 1.54ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG651492620 or 651492620. Listed at 5 retailers as of October 31, 2026, with prices from £339 to £1,612, a £1,273 spread on the same certified stone. Do Amore Diamonds lists it at £1,612. 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

1.54
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG651492620
Dimensions7.72 × 6.19 × 4.30 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
Pre-existing laser inscription on girdle. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.. Indications of post-growth treatment.
Top View
7.72 mm6.19 mm1.54 ctI / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651492620
Side View
Table 61.0%Crown 34.2°Girdle: MED-STKPavilion 42.5°Culet: NoneDepth 69.5%

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: Nov 1
Current: £1,612 GBP|Low: £263 GBP|High: £1,784 GBP|Avg: £632 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9£263 GBP
Retailer 3£339 GBP
Retailer 10£384 GBP
Retailer 4£386 GBP
Retailer 5£417 GBP
Retailer 7£437 GBP
Retailer 6£586 GBP
Retailer 8£830 GBP
Retailer 2£1,018 GBP
Do Amore Diamonds£1,612 GBP

33 data points across 10 retailers

5 retailers£339 GBP to £1,612 GBP

A
Cheapest Retailer
-
£339 GBP
B+
Retailer 2
-
£386 GBP
$517 USD
View
B+
Retailer 3
-
£417 GBP
$559 USD
View
B
Retailer 4
-
£1,018 GBP
View
Most Expensive
B
Do Amore Diamonds
7-1660134 · Oct 31
£1,612 GBP
$2,160 USD
View
4 more retailers have this diamond
Prices start from £339 GBPSave up to £1,273 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
1.54ct Cushion
£339 GBP