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Cushion|Lab Grown|IGI

1.73ct H SI1 Cushion Lab Grown Diamond

GD • H/SI1 • IGI LG538290301

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG538290301

Diamond specifications and retailer prices

From $347 USD
As of October 30, 2026
Save $1,195 USD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,542 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG538290301 or 538290301. Listed at 9 retailers as of October 26, 2026, with prices from $347 to $1,542, a $1,195 spread on the same certified stone. MOH London lists it at $1,542. 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

1.73
Carat
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538290301
Dimensions7.41 × 7.34 × 4.64 mm
L/W Ratio1.01
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 Type IIa
Top View
7.41 mm7.34 mm1.73 ctH / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG538290301
Side View
Table 61.5%Crown 34.4°Girdle: MED-STKPavilion 42°Culet: NoneDepth 63.2%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,542 USD|Low: $248 USD|High: $1,558 USD|Avg: $795 USD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$347 USD
Retailer 5$384 USD
Retailer 4$580 USD
Retailer 9$614 USD
Retailer 6$626 USD
Retailer 8$726 USD
Retailer 10$776 USD
Retailer 3$945 USD
Retailer 2$1,050 USD
MOH London$1,542 USD

11 data points across 10 retailers

9 retailers$347 USD to $1,542 USD

B+
Cheapest Retailer
-
$347 USD
Final sale: no returns
Retailer 2
-
$384 USD
View
Price last confirmed 20 days ago
B+
Retailer 3
-
$580 USD
View
B+
Retailer 4
-
$614 USD
View
B+
Retailer 5
-
$626 USD
View
B+
Retailer 6
-
$726 USD
View
Retailer 7
-
$945 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$1,050 USD
View
Most Expensive
B
MOH London
LG538290301 · Oct 26
$1,542 USD
£1,214 GBP
View
8 more retailers have this diamond
Prices start from $347 USDSave up to $1,195 USD

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.

B+
1.73ct Cushion
$347 USD