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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 $1,901 NZD
£842 GBP
As of October 26, 2026
Save $1,423 NZD (43%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,324 NZD 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 $1,901 to $3,324, a $1,423 spread on the same certified stone. Do Amore Diamonds lists it at $3,324. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $3,324 NZD|Low: $411 NZD|High: $3,519 NZD|Avg: $1,536 NZD|-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$411 NZD
Retailer 4$750 NZD
Retailer 10$820 NZD
Retailer 11$995 NZD
Retailer 3$1,271 NZD
Retailer 7$1,404 NZD
Retailer 9$1,459 NZD
Retailer 5$1,520 NZD
Retailer 2$1,901 NZD
Retailer 8$2,755 NZD
Do Amore Diamonds$3,324 NZD

13 data points across 11 retailers

4 retailers$1,901 NZD to $3,324 NZD

Retailer 1
-
$750 NZD
$422 USD
Price last confirmed 8 days ago
Retailer 2
-
$1,520 NZD
$855 USD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$1,901 NZD
£842 GBP
View
Most Expensive
B
Do Amore Diamonds
27-425E2CB6D · Oct 27
$3,324 NZD
$1,870 USD
View
3 more retailers have this diamond
Prices start from $1,901 NZDSave up to $1,423 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
$1,901 NZD