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Cushion|Lab Grown|IGI

1.83ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG492129086

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG492129086

Diamond specifications and retailer prices

From $400 AUD
$281 USD
As of October 28, 2026
Save $3,500 AUD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,900 AUD at Do Amore Diamonds · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492129086 or 492129086. Listed at 16 retailers as of October 28, 2026, with prices from $400 to $3,900, a $3,500 spread on the same certified stone. Do Amore Diamonds lists it at $3,900. 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

1.83
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492129086
Dimensions7.41 × 6.86 × 4.72 mm
L/W Ratio1.08
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
7.41 mm6.86 mm1.83 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492129086
Side View
Table 59.0%Crown 36.3°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 68.8%

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: $3,900 AUD|Low: $400 AUD|High: $3,900 AUD|Avg: $1,378 AUD|+22.9%
Do Amore Diamonds
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 29, 2026
Retailer 4$400 AUD
Retailer 9$544 AUD
Retailer 8$733 AUD
Retailer 10$733 AUD
Retailer 7$773 AUD
Retailer 11$796 AUD
Retailer 2$1,077 AUD
Retailer 5$1,433 AUD
Retailer 3$1,776 AUD
Retailer 12$2,157 AUD
Retailer 13$2,210 AUD
Retailer 6$2,419 AUD
Do Amore Diamonds$3,900 AUD

39 data points across 13 retailers

16 retailers$400 AUD to $3,900 AUD

A
Cheapest Retailer
-
$400 AUD
$281 USD
Final sale: no returns
A
Retailer 2
-
$544 AUD
$382 USD
View
A
Retailer 3
-
$633 AUD
£350 GBP
View
Price last confirmed 34 days ago
A
Retailer 4
-
$733 AUD
$515 USD
View
A
Retailer 5
-
$733 AUD
$515 USD
View
A
Retailer 6
-
$773 AUD
£428 GBP
View
A
Retailer 7
-
$796 AUD
$559 USD
View
B+
Retailer 8
-
$1,077 AUD
£596 GBP
View
B+
Retailer 9
-
$1,433 AUD
$1,007 USD
View
B
Retailer 10
-
$1,676 AUD
CA$1,635 CAD
View
B
Retailer 11
-
$1,776 AUD
$1,248 USD
View
B
Retailer 12
-
$2,157 AUD
$1,516 USD
View
B
Retailer 13
-
$2,210 AUD
SGD 2,098 SGD
View
B
Retailer 14
-
$2,419 AUD
£1,338 GBP
View
B
Retailer 15
-
$3,373 AUD
$2,370 USD
View
Price last confirmed 28 days ago
Most Expensive
B
Do Amore Diamonds
27-8BB05FEF8 · Oct 29
$3,900 AUD
$2,740 USD
View
15 more retailers have this diamond
Prices start from $400 AUDSave up to $3,500 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
1.83ct Cushion
$400 AUD