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Cushion|Lab Grown|IGI

1.69ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG515211426

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG515211426

Diamond specifications and retailer prices

From $858 AUD
$603 USD
As of October 28, 2026
Save $3,113 AUD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,972 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.69ct lab-grown cushion diamond

This 1.69ct 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 very-good cut grade and certified by IGI LG515211426 or 515211426. Listed at 8 retailers as of October 26, 2026, with prices from $858 to $3,972, a $3,113 spread on the same certified stone. MOH London lists it at $3,972. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.69
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515211426
Dimensions6.60 × 6.60 × 4.49 mm
L/W Ratio1.00
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
6.60 mm6.60 mm1.69 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515211426
Side View
Table 67.0%Crown 38.6°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $3,972 AUD|Low: $613 AUD|High: $4,013 AUD|Avg: $1,529 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 6$858 AUD
Retailer 8$947 AUD
Retailer 7$1,146 AUD
Retailer 3$1,393 AUD
Retailer 5$1,470 AUD
Retailer 2$1,475 AUD
Retailer 4$1,495 AUD
MOH London$3,972 AUD

41 data points across 8 retailers

8 retailers$858 AUD to $3,972 AUD

A
Cheapest Retailer
-
$858 AUD
$603 USD
Final sale: no returns
B+
Retailer 2
-
$947 AUD
$665 USD
View
B+
Retailer 3
-
$1,146 AUD
$805 USD
View
B+
Retailer 4
-
$1,393 AUD
€932 EUR
View
B
Retailer 5
-
$1,470 AUD
$1,033 USD
View
B
Retailer 6
-
$1,475 AUD
£816 GBP
View
B+
Retailer 7
-
$1,495 AUD
$1,050 USD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG515211426 · Oct 26
$3,972 AUD
£2,197 GBP
View
7 more retailers have this diamond
Prices start from $858 AUDSave up to $3,113 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
1.69ct Cushion
$858 AUD