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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 $616 NZD
$347 USD
As of November 1, 2026
Save $2,115 NZD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,731 NZD at MOH London · As of November 1, 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 November 1, 2026, with prices from $616 to $2,731, a $2,115 spread on the same certified stone. MOH London lists it at $2,731. 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
Colour
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

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,731 NZD|Low: $440 NZD|High: $2,765 NZD|Avg: $1,404 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7$616 NZD
Retailer 5$681 NZD
Retailer 4$1,029 NZD
Retailer 9$1,089 NZD
Retailer 6$1,111 NZD
Retailer 8$1,288 NZD
Retailer 10$1,377 NZD
Retailer 3$1,677 NZD
Retailer 2$1,863 NZD
MOH London$2,731 NZD

12 data points across 10 retailers

9 retailers$616 NZD to $2,731 NZD

B+
Cheapest Retailer
-
$616 NZD
$347 USD
Final sale: no returns
Retailer 2
-
$681 NZD
$384 USD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
$1,029 NZD
$580 USD
View
B+
Retailer 4
-
$1,089 NZD
$614 USD
View
B+
Retailer 5
-
$1,111 NZD
$626 USD
View
B+
Retailer 6
-
$1,288 NZD
$726 USD
View
B+
Retailer 7
-
$1,677 NZD
$945 USD
View
B+
Retailer 8
-
$1,863 NZD
$1,050 USD
View
Most Expensive
B
MOH London
LG538290301 · Nov 1
$2,731 NZD
£1,212 GBP
View
8 more retailers have this diamond
Prices start from $616 NZDSave up to $2,115 NZD

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
$616 NZD