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Cushion|Lab Grown|IGI

1.83ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG515227078

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG515227078

Diamond specifications and retailer prices

From $769 AUD
$539 USD
As of November 1, 2026
Save $2,912 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,681 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.83ct lab-grown cushion diamond

This 1.83ct 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 very-good cut grade and certified by IGI LG515227078 or 515227078. Listed at 11 retailers as of November 1, 2026, with prices from $769 to $3,681, a $2,912 spread on the same certified stone. Do Amore Diamonds lists it at $3,681. 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

1.83
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515227078
Dimensions6.99 × 6.91 × 4.82 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
6.99 mm6.91 mm1.83 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515227078
Side View
Table 61.5%Crown 34.5°Girdle: STK-VTKPavilion 40.2°Culet: NoneDepth 69.8%

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: $3,681 AUD|Low: $404 AUD|High: $3,681 AUD|Avg: $1,419 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$514 AUD
Retailer 7$769 AUD
Retailer 5$771 AUD
Retailer 9$846 AUD
Retailer 2$1,014 AUD
Retailer 11$1,338 AUD
Retailer 6$1,427 AUD
Retailer 3$1,838 AUD
Retailer 10$2,056 AUD
Retailer 4$2,287 AUD
Do Amore Diamonds$3,681 AUD

38 data points across 11 retailers

11 retailers$769 AUD to $3,681 AUD

Retailer 1
-
$514 AUD
$360 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$769 AUD
$539 USD
View
B+
Retailer 3
-
$771 AUD
$540 USD
View
B+
Retailer 4
-
$846 AUD
$593 USD
View
B+
Retailer 5
-
$1,014 AUD
£559 GBP
View
B+
Retailer 6
-
$1,338 AUD
$938 USD
View
B+
Retailer 7
-
$1,427 AUD
$1,000 USD
View
B
Retailer 8
-
$1,838 AUD
$1,288 USD
View
B
Retailer 9
-
$2,056 AUD
$1,441 USD
View
B
Retailer 10
-
$2,287 AUD
£1,262 GBP
View
Most Expensive
C
Do Amore Diamonds
27-4E9089D8C · Nov 2
$3,681 AUD
$2,580 USD
View
10 more retailers have this diamond
Prices start from $769 AUDSave up to $2,912 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+
1.83ct Cushion
$769 AUD