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Cushion|Lab Grown|IGI

3.53ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1

Diamond specifications and retailer prices

From $1,215 AUD
£670 GBP
As of November 2, 2026
Save $2,542 AUD (68%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,757 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.53ct lab-grown cushion diamond

This 3.53ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of October 31, 2026, with prices from $1,215 to $3,757, a $2,542 spread on the same certified stone. Blue Nile lists it at $3,757. 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

3.53
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions9.56 × 8.57 × 5.80 mm
L/W Ratio1.12
Top View
9.56 mm8.57 mm3.53 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.7%

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 2
Current: $3,757 AUD|Low: $1,215 AUD|High: $3,757 AUD|Avg: $2,479 AUD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$1,215 AUD
Retailer 4$1,617 AUD
Retailer 3$3,392 AUD
Blue Nile$3,757 AUD

17 data points across 4 retailers

3 retailers$1,215 AUD to $3,757 AUD

A
Cheapest Retailer
-
$1,215 AUD
£670 GBP
B
Retailer 2
-
$3,392 AUD
CA$3,301 CAD
View
Most Expensive
B
Blue Nile
22024531 · Oct 31
$3,757 AUD
$2,633 USD
View
2 more retailers have this diamond
Prices start from $1,215 AUDSave up to $2,542 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
3.53ct Cushion
$1,215 AUD