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Cushion|Lab Grown|IGI

1.68ct G SI1 Cushion Lab Grown Diamond

GD • G/SI1 • IGI LG557236081

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG557236081

Diamond specifications and retailer prices

From $656 AUD
$461 USD
As of November 1, 2026
Save $2,746 AUD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,402 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.68ct lab-grown cushion diamond

This 1.68ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG557236081 or 557236081. Listed at 11 retailers as of November 1, 2026, with prices from $656 to $3,402, a $2,746 spread on the same certified stone. Do Amore Diamonds lists it at $3,402. 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

1.68
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557236081
Dimensions6.79 × 6.74 × 4.64 mm
L/W Ratio1.01
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
6.79 mm6.74 mm1.68 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557236081
Side View
Table 63.0%Crown 34.4°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 68.8%

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: Nov 1
Current: $3,402 AUD|Low: $533 AUD|High: $3,402 AUD|Avg: $1,299 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$656 AUD
Retailer 5$662 AUD
Retailer 2$671 AUD
Retailer 9$787 AUD
Retailer 4$929 AUD
Retailer 7$1,196 AUD
Retailer 11$1,262 AUD
Retailer 3$1,684 AUD
Retailer 10$1,919 AUD
Retailer 6$2,103 AUD
Do Amore Diamonds$3,402 AUD

37 data points across 11 retailers

11 retailers$656 AUD to $3,402 AUD

B+
Cheapest Retailer
-
$656 AUD
$461 USD
B+
Retailer 2
-
$662 AUD
$465 USD
View
B+
Retailer 3
-
$671 AUD
£371 GBP
View
B+
Retailer 4
-
$787 AUD
$553 USD
View
B+
Retailer 5
-
$929 AUD
£514 GBP
View
B+
Retailer 6
-
$1,196 AUD
$840 USD
View
B+
Retailer 7
-
$1,262 AUD
$887 USD
View
B
Retailer 8
-
$1,684 AUD
$1,183 USD
View
C
Retailer 9
-
$1,919 AUD
$1,348 USD
View
C
Retailer 10
-
$2,103 AUD
£1,163 GBP
View
Most Expensive
C
Do Amore Diamonds
27-47D0A74F4 · Nov 2
$3,402 AUD
$2,390 USD
View
10 more retailers have this diamond
Prices start from $656 AUDSave up to $2,746 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+
1.68ct Cushion
$656 AUD