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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG836639794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836639794

Diamond specifications and retailer prices

From $825 AUD
£457 GBP
As of October 30, 2026
Save $4,527 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,353 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836639794 or 836639794. Listed at 15 retailers as of October 30, 2026, with prices from $825 to $5,353, a $4,527 spread on the same certified stone. Brilliant Earth lists it at $5,353. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836639794
Dimensions7.99 × 6.51 × 4.49 mm
L/W Ratio1.23
Girdle conditionFaceted
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
7.99 mm6.51 mm1.83 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836639794
Side View
Table 62.0%Crown 33.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 69.0%

Caratlytics Score

How it works →
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 30
Current: $5,353 AUD|Low: $824 AUD|High: $6,178 AUD|Avg: $2,748 AUD|-13.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 2$825 AUD
Retailer 14$941 AUD
Retailer 4$1,011 AUD
Retailer 16$1,119 AUD
Retailer 13$1,179 AUD
Retailer 11$1,220 AUD
Retailer 5$1,653 AUD
Retailer 10$1,813 AUD
Retailer 17$2,077 AUD
Retailer 12$2,875 AUD
Retailer 9$3,152 AUD
Retailer 8$3,714 AUD
Retailer 6$4,509 AUD
Retailer 3$4,655 AUD
Retailer 7$4,919 AUD
Retailer 15$5,054 AUD
Brilliant Earth$5,353 AUD

35 data points across 17 retailers

15 retailers$825 AUD to $5,353 AUD

A
Cheapest Retailer
-
$825 AUD
£457 GBP
A
Retailer 2
-
$941 AUD
$661 USD
View
A
Retailer 3
-
$1,011 AUD
$710 USD
View
A
Retailer 4
-
$1,061 AUD
$745 USD
View
A
Retailer 5
-
$1,119 AUD
$786 USD
View
A
Retailer 6
-
$1,220 AUD
€816 EUR
View
A
Retailer 7
-
$1,653 AUD
$1,161 USD
View
A
Retailer 8
-
$1,813 AUD
View
A
Retailer 9
-
$2,077 AUD
$1,459 USD
View
B+
Retailer 10
-
$2,875 AUD
£1,590 GBP
View
Retailer 11
-
$4,509 AUD
View
Price last confirmed 23 days ago
Retailer 12
-
$4,655 AUD
$3,270 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$4,919 AUD
$3,455 USD
View
B
Retailer 14
-
$5,054 AUD
$3,550 USD
View
Most Expensive
B
Brilliant Earth
21581090Y · Oct 30
$5,353 AUD
$3,760 USD
View
14 more retailers have this diamond
Prices start from $825 AUDSave up to $4,527 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
$825 AUD