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Cushion|Lab Grown|IGI

1.72ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG618453998

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG618453998

Diamond specifications and retailer prices

From $1,526 AUD
£842 GBP
As of October 26, 2026
Save $1,142 AUD (43%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,668 AUD at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG618453998 or 618453998. Listed at 4 retailers as of October 26, 2026, with prices from $1,526 to $2,668, a $1,142 spread on the same certified stone. Do Amore Diamonds lists it at $2,668. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618453998
Dimensions8.90 × 6.12 × 4.08 mm
L/W Ratio1.45
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
8.90 mm6.12 mm1.72 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618453998
Side View
Table 61.0%Crown 34°Girdle: THN-STKPavilion 37.4°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
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 26
Current: $2,668 AUD|Low: $330 AUD|High: $2,825 AUD|Avg: $1,233 AUD|-5.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 25, 2026
Retailer 6$330 AUD
Retailer 4$602 AUD
Retailer 10$658 AUD
Retailer 11$799 AUD
Retailer 3$1,020 AUD
Retailer 7$1,127 AUD
Retailer 9$1,171 AUD
Retailer 5$1,220 AUD
Retailer 2$1,526 AUD
Retailer 8$2,212 AUD
Do Amore Diamonds$2,668 AUD

13 data points across 11 retailers

4 retailers$1,526 AUD to $2,668 AUD

Retailer 1
-
$602 AUD
$422 USD
Price last confirmed 7 days ago
Retailer 2
-
$1,220 AUD
$855 USD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$1,526 AUD
£842 GBP
View
Most Expensive
B
Do Amore Diamonds
27-425E2CB6D · Oct 27
$2,668 AUD
$1,870 USD
View
3 more retailers have this diamond
Prices start from $1,526 AUDSave up to $1,142 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.

B+
1.72ct Cushion
$1,526 AUD