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Cushion|Lab Grown|IGI

1.61ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG497146598

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG497146598

Diamond specifications and retailer prices

From $300 AUD
$211 USD
As of October 30, 2026
Save $1,399 AUD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,699 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.61ct lab-grown cushion diamond

This 1.61ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497146598 or 497146598. Listed at 13 retailers as of October 29, 2026, with prices from $300 to $1,699, a $1,399 spread on the same certified stone. MOH London lists it at $1,699. 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

1.61
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497146598
Dimensions6.63 × 6.59 × 4.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.63 mm6.59 mm1.61 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497146598
Side View
Table 62.0%Crown 38.5°Girdle: STK-THKPavilion 36°Culet: NoneDepth 67.1%

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 30
Current: $1,699 AUD|Low: $300 AUD|High: $1,712 AUD|Avg: $872 AUD|+8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 5$300 AUD
Retailer 11$362 AUD
Retailer 9$498 AUD
Retailer 4$584 AUD
Retailer 6$625 AUD
Retailer 2$665 AUD
Retailer 12$722 AUD
Retailer 10$732 AUD
Retailer 8$952 AUD
Retailer 13$1,238 AUD
Retailer 7$1,245 AUD
Retailer 3$1,637 AUD
MOH London$1,699 AUD

42 data points across 13 retailers

13 retailers$300 AUD to $1,699 AUD

A
Cheapest Retailer
-
$300 AUD
$211 USD
Final sale: no returns
Retailer 2
-
$362 AUD
$254 USD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$498 AUD
$350 USD
View
Retailer 4
-
$584 AUD
£323 GBP
View
Price last confirmed 25 days ago
A
Retailer 5
-
$625 AUD
€418 EUR
View
A
Retailer 6
-
$665 AUD
£368 GBP
View
A
Retailer 7
-
$722 AUD
$507 USD
View
A
Retailer 8
-
$732 AUD
$514 USD
View
B+
Retailer 9
-
$952 AUD
$669 USD
View
B+
Retailer 10
-
$1,238 AUD
$870 USD
View
Retailer 11
-
$1,245 AUD
$875 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$1,637 AUD
$1,150 USD
View
Most Expensive
B
MOH London
LG497146598 · Oct 29
$1,699 AUD
£940 GBP
View
12 more retailers have this diamond
Prices start from $300 AUDSave up to $1,399 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
1.61ct Cushion
$300 AUD