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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 $649 AUD
£358 GBP
As of November 2, 2026
Save $2,762 AUD (81%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,410 AUD at Do Amore Diamonds · As of November 2, 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 November 2, 2026, with prices from $649 to $3,410, a $2,762 spread on the same certified stone. Do Amore Diamonds lists it at $3,410. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,410 AUD|Low: $504 AUD|High: $3,410 AUD|Avg: $1,209 AUD|+10.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$504 AUD
Retailer 2$649 AUD
Retailer 10$735 AUD
Retailer 4$738 AUD
Retailer 5$798 AUD
Retailer 7$836 AUD
Retailer 6$1,120 AUD
Retailer 8$1,587 AUD
Retailer 3$1,946 AUD
Do Amore Diamonds$3,410 AUD

34 data points across 10 retailers

5 retailers$649 AUD to $3,410 AUD

A
Cheapest Retailer
-
$649 AUD
£358 GBP
B+
Retailer 2
-
$738 AUD
$517 USD
View
B+
Retailer 3
-
$798 AUD
$559 USD
View
B
Retailer 4
-
$1,946 AUD
£1,074 GBP
View
Most Expensive
B
Do Amore Diamonds
27-04647DFDC · Nov 2
$3,410 AUD
$2,390 USD
View
4 more retailers have this diamond
Prices start from $649 AUDSave up to $2,762 AUD

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
$649 AUD