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Cushion|Lab Grown|IGI

1.54ct D VS1 Cushion Lab Grown Diamond

GD • D/VS1 • IGI LG520292508

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG520292508

Diamond specifications and retailer prices

From $353 AUD
$248 USD
As of November 1, 2026
Save $1,447 AUD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,961 AUD at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

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 D colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG520292508 or 520292508. Listed at 18 retailers as of November 1, 2026, with a 410% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520292508
Dimensions6.59 × 6.39 × 4.10 mm
L/W Ratio1.03
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
6.59 mm6.39 mm1.54 ctD / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520292508
Side View
Table 63.5%Crown 33.7°Girdle: STK-THKPavilion 33.7°Culet: NoneDepth 64.2%

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 1
Current: $2,961 AUD|Low: $353 AUD|High: $2,961 AUD|Avg: $891 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$353 AUD
Retailer 12$393 AUD
Retailer 9$527 AUD
Retailer 7$629 AUD
Retailer 5$677 AUD
Retailer 2$730 AUD
Retailer 3$861 AUD
Retailer 10$916 AUD
Retailer 8$958 AUD
Retailer 11$1,466 AUD
Retailer 6$1,571 AUD
Brilliant Earth$2,961 AUD

44 data points across 12 retailers

18 retailers$353 AUD to $1,800 AUD

A
Cheapest Retailer
-
$353 AUD
$248 USD
Final sale: no returns
Retailer 2
-
$393 AUD
$276 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$527 AUD
$370 USD
View
A
Retailer 4
-
$629 AUD
€421 EUR
View
A
Retailer 5
-
$677 AUD
ZAR 7,685 ZAR
View
B+
Retailer 6
-
$730 AUD
£404 GBP
View
B+
Retailer 7
-
$763 AUD
$536 USD
View
B+
Retailer 8
-
$801 AUD
$562 USD
View
B+
Retailer 9
-
$861 AUD
$605 USD
View
B+
Retailer 10
-
$916 AUD
View
B+
Retailer 11
-
$958 AUD
$673 USD
View
B
Retailer 12
-
$1,336 AUD
$938 USD
View
Retailer 13
-
$1,466 AUD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$1,571 AUD
£869 GBP
View
B
Retailer 15
-
$1,576 AUD
$1,107 USD
View
Retailer 16
-
$1,690 AUD
$1,187 USD
View
Price last confirmed 84 days ago
B
Retailer 17
-
$1,800 AUD
$1,264 USD
View
Most Expensive
Brilliant Earth
16031645A · Oct 18
$2,961 AUD
$2,080 USD
View
Price last confirmed 14 days ago
17 more retailers have this diamond
Prices start from $353 AUDSave up to $1,447 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
$353 AUD