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Cushion|Lab Grown|IGI

11.21ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG605326749

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG605326749

Diamond specifications and retailer prices

From $6,455 AUD
$4,534 USD
As of November 1, 2026
Save $19,469 AUD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $25,924 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 11.21ct lab-grown cushion diamond

This 11.21ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG605326749 or 605326749. Listed at 4 retailers as of October 31, 2026, with prices from $6,455 to $25,924, a $19,469 spread on the same certified stone. Brilliant Earth lists it at $25,924. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

11.21
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605326749
Dimensions15.10 × 12.34 × 7.82 mm
L/W Ratio1.22
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
15.10 mm12.34 mm11.21 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605326749
Side View
Table 59.0%Crown 37.2°Girdle: MED-THKPavilion 37.5°Culet: NoneDepth 63.4%

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: Nov 1
Current: $25,924 AUD|Low: $2,429 AUD|High: $27,262 AUD|Avg: $9,804 AUD|-3.0%
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
October 31, 2026
Retailer 7$2,429 AUD
Retailer 14$4,671 AUD
Retailer 12$4,826 AUD
Retailer 4$6,017 AUD
Retailer 13$6,455 AUD
Retailer 9$6,607 AUD
Retailer 5$6,905 AUD
Retailer 2$7,688 AUD
Retailer 6$8,027 AUD
Retailer 8$8,516 AUD
Retailer 3$10,690 AUD
Retailer 15$12,639 AUD
Retailer 10$13,139 AUD
Brilliant Earth$25,924 AUD
Retailer 11$27,262 AUD

20 data points across 15 retailers

4 retailers$6,455 AUD to $25,924 AUD

A
Cheapest Retailer
-
$6,455 AUD
$4,534 USD
B+
Retailer 2
-
$7,688 AUD
€5,143 EUR
View
B
Retailer 3
-
$12,639 AUD
$8,878 USD
View
Most Expensive
B
Brilliant Earth
18094760A · Oct 31
$25,924 AUD
$18,210 USD
View
3 more retailers have this diamond
Prices start from $6,455 AUDSave up to $19,469 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
11.21ct Cushion
$6,455 AUD