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Cushion|Lab Grown|IGI

1.72ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG12747420

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12747420

Diamond specifications and retailer prices

From $1,389 NZD
CA$1,084 CAD
As of October 30, 2026
Save $448 NZD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,837 NZD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 1.72ct lab-grown cushion diamond

This 1.72ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12747420 or 12747420. Listed at 2 retailers as of October 30, 2026, with prices from $1,389 to $1,837, a $448 spread on the same certified stone. The Diamond Guys lists it at $1,837. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.72
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12747420
Dimensions7.05 × 6.90 × 4.19 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
7.05 mm6.90 mm1.72 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12747420
Side View
Table 63.5%Crown 33°Girdle: STK-UNDPavilion 32.1°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $875 NZD|Low: $687 NZD|High: $1,837 NZD|Avg: $1,094 NZD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
The Diamond Guys
September 18, 2026
Retailer 4$687 NZD
Retailer 2$726 NZD
Retailer 1$875 NZD
Retailer 5$1,045 NZD
Retailer 3$1,389 NZD
The Diamond Guys$1,837 NZD

3 data points across 6 retailers

2 retailers$1,389 NZD to $1,837 NZD

B+
Cheapest Retailer
-
$1,389 NZD
CA$1,084 CAD
Most Expensive
B
The Diamond Guys
1779252911 · Oct 30
$1,837 NZD
$1,032 USD
View
1 more retailer has this diamond
Prices start from $1,389 NZDSave up to $448 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+
1.72ct Cushion
$1,389 NZD