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Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG828685827

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG828685827

Diamond specifications and retailer prices

From $299 AUD
As of November 4, 2026
Save $1,347 AUD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,645 AUD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828685827 or 828685827. Listed at 15 retailers as of November 4, 2026, with prices from $299 to $1,645, a $1,347 spread on the same certified stone. Reve Diamonds lists it at $1,645. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828685827
Dimensions6.30 × 6.19 × 4.06 mm
L/W Ratio1.02
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
6.30 mm6.19 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828685827
Side View
Table 62.0%Crown 33.1°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 65.6%

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 4
Current: $594 AUD|Low: $284 AUD|High: $1,645 AUD|Avg: $815 AUD|+7.8%
Retailer 1
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
Reve Diamonds
November 5, 2026
Retailer 7$299 AUD
Retailer 6$319 AUD
Retailer 13$554 AUD
Retailer 11$571 AUD
Retailer 3$583 AUD
Retailer 1$594 AUD
Retailer 14$623 AUD
Retailer 9$807 AUD
Retailer 8$864 AUD
Retailer 5$929 AUD
Retailer 10$943 AUD
Retailer 2$957 AUD
Retailer 4$1,141 AUD
Retailer 12$1,547 AUD
Reve Diamonds$1,645 AUD

35 data points across 15 retailers

15 retailers$299 AUD to $1,645 AUD

A
Cheapest Retailer
-
$299 AUD
Final sale: no returns
Retailer 2
-
$319 AUD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$554 AUD
View
A
Retailer 4
-
$571 AUD
View
A
Retailer 5
-
$583 AUD
View
A
Retailer 6
-
$594 AUD
View
A
Retailer 7
-
$623 AUD
View
B+
Retailer 8
-
$807 AUD
View
B+
Retailer 9
-
$864 AUD
View
Retailer 10
-
$929 AUD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$943 AUD
View
B+
Retailer 12
-
$957 AUD
View
B
Retailer 13
-
$1,141 AUD
View
B
Retailer 14
-
$1,547 AUD
View
Most Expensive
B
Reve Diamonds
FBC391584 · Nov 4
$1,645 AUD
$1,152 USD
View
14 more retailers have this diamond
Prices start from $299 AUDSave up to $1,347 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
1.21ct Cushion
$299 AUD