Cushion|Lab Grown|IGI

1.54ct I SI1 Cushion Lab Grown Diamond

VG • I/SI1 • IGI LG594313004

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG594313004

Diamond specifications and retailer prices

This diamond has been sold
Last seen: Oct 23, 2026 at $302 USD
$302 USDlast known price

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 LG594313004 or 594313004. 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
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594313004
Dimensions6.73 × 6.71 × 4.56 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment.
Top View
6.73 mm6.71 mm1.54 ctI / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG594313004
Side View
Table 59.0%Crown 36.5°Girdle: MediumPavilion 40.4°Culet: NoneDepth 68.0%

Caratlytics Score

Price History

Last verified: Oct 23
Current: $302 USD|Low: $116 USD|High: $1,235 USD|Avg: $691 USD|-75.5%
Adiamor
B2C Jewels
Loose Grown Diamond
Nova Diamonds
September 7, 2026
Adiamor$302 USD
Loose Grown Diamond$340 USD
B2C Jewels$550 USD
Nova Diamonds$790 USD

38 data points across 4 retailers

Historical Listings

Adiamor
D-81433994 · Oct 23
$302 USD
View
Loose Grown Diamond
594313004 · Aug 14
$340 USD
View
B2C Jewels
26933217 · Aug 8
$550 USD
View
Nova Diamonds
CC5312697 · May 18
$790 USD
£622 GBP
View

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.

1.54ct I SI1 Cushion Lab-Grown Diamond (Sold), IGI LG594313004