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Cushion|Lab Grown|IGI

1.73ct H VVS2 Cushion Lab Grown Diamond

ID • H/VVS2 • IGI LG620421291

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG620421291

Diamond specifications and retailer prices

From $387 AUD
$272 USD
As of October 30, 2026
Save $1,449 AUD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,836 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG620421291 or 620421291. Listed at 12 retailers as of October 30, 2026, with prices from $387 to $1,836, a $1,449 spread on the same certified stone. Brilliant Earth lists it at $1,836. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
H
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620421291
Dimensions8.23 × 6.42 × 4.35 mm
L/W Ratio1.28
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
8.23 mm6.42 mm1.73 ctH / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620421291
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 67.8%

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: $1,836 AUD|Low: $377 AUD|High: $1,979 AUD|Avg: $959 AUD|-7.2%
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
November 1, 2026
Retailer 13$387 AUD
Retailer 2$513 AUD
Retailer 11$577 AUD
Retailer 5$676 AUD
Retailer 7$737 AUD
Retailer 6$770 AUD
Retailer 12$799 AUD
Retailer 3$897 AUD
Retailer 8$1,000 AUD
Retailer 10$1,072 AUD
Retailer 4$1,453 AUD
Retailer 9$1,721 AUD
Brilliant Earth$1,836 AUD

40 data points across 13 retailers

12 retailers$387 AUD to $1,836 AUD

A
Cheapest Retailer
-
$387 AUD
$272 USD
Final sale: no returns
A
Retailer 2
-
$513 AUD
£284 GBP
View
B+
Retailer 3
-
$577 AUD
$405 USD
View
A
Retailer 4
-
$737 AUD
ZAR 8,364 ZAR
View
A
Retailer 5
-
$770 AUD
€515 EUR
View
A
Retailer 6
-
$799 AUD
$561 USD
View
A
Retailer 7
-
$897 AUD
$630 USD
View
A
Retailer 8
-
$1,000 AUD
View
B+
Retailer 9
-
$1,072 AUD
$753 USD
View
B+
Retailer 10
-
$1,453 AUD
$1,021 USD
View
B+
Retailer 11
-
$1,721 AUD
£952 GBP
View
Most Expensive
B+
Brilliant Earth
11234971A · Oct 31
$1,836 AUD
$1,290 USD
View
11 more retailers have this diamond
Prices start from $387 AUDSave up to $1,449 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
1.73ct Cushion
$387 AUD