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Cushion|Lab Grown|IGI

1.72ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067665

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG425067665

Diamond specifications and retailer prices

From $1,367 AUD
$960 USD
As of October 31, 2026
Save $5,621 AUD (80%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,988 AUD at MOH London · As of November 1, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067665 or 425067665. Listed at 6 retailers as of October 31, 2026, with prices from $1,367 to $6,988, a $5,621 spread on the same certified stone. MOH London lists it at $6,988. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067665
Dimensions7.30 × 7.03 × 4.64 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.30 mm7.03 mm1.72 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067665
Side View
Table 59.5%Crown 37.2°Girdle: THK-VTKPavilion 40.7°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,988 AUD|Low: $1,367 AUD|High: $7,082 AUD|Avg: $3,895 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2$1,367 AUD
Retailer 5$2,362 AUD
Retailer 3$2,447 AUD
Retailer 6$2,691 AUD
Retailer 7$3,328 AUD
Retailer 4$3,855 AUD
MOH London$6,988 AUD
Retailer 8$7,006 AUD

15 data points across 8 retailers

6 retailers$1,367 AUD to $6,988 AUD

A
Cheapest Retailer
-
$1,367 AUD
$960 USD
B
Retailer 2
-
$2,362 AUD
$1,659 USD
View
Final sale: no returns
Retailer 3
-
$2,447 AUD
$1,719 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
$2,691 AUD
$1,890 USD
View
B
Retailer 5
-
$3,855 AUD
$2,708 USD
View
Most Expensive
B
MOH London
LG425067665 · Nov 1
$6,988 AUD
£3,865 GBP
View
5 more retailers have this diamond
Prices start from $1,367 AUDSave up to $5,621 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
1.72ct Cushion
$1,367 AUD