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Cushion|Lab Grown|IGI

1.55ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG674547147

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG674547147

Diamond specifications and retailer prices

From $321 AUD
$225 USD
As of November 1, 2026
Save $1,389 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,710 AUD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674547147 or 674547147. Listed at 15 retailers as of November 1, 2026, with prices from $321 to $1,710, a $1,389 spread on the same certified stone. Reve Diamonds lists it at $1,710. 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

1.55
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674547147
Dimensions6.81 × 6.48 × 4.48 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.48 mm1.55 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674547147
Side View
Table 62.0%Crown 36.1°Girdle: MED-STKPavilion 42°Culet: NoneDepth 69.1%

Caratlytics Score

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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: $932 AUD|Low: $321 AUD|High: $1,687 AUD|Avg: $867 AUD|+12.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$321 AUD
Retailer 9$402 AUD
Retailer 3$456 AUD
Retailer 2$507 AUD
Retailer 5$583 AUD
Retailer 4$655 AUD
Retailer 1$932 AUD
Retailer 10$1,370 AUD
Retailer 6$1,384 AUD
Retailer 8$1,676 AUD

39 data points across 10 retailers

15 retailers$321 AUD to $1,710 AUD

A
Cheapest Retailer
-
$321 AUD
$225 USD
Final sale: no returns
A
Retailer 2
-
$402 AUD
HK$2,200 HKD
View
A
Retailer 3
-
$456 AUD
£252 GBP
View
B+
Retailer 4
-
$507 AUD
$355 USD
View
A
Retailer 5
-
$583 AUD
€389 EUR
View
A
Retailer 6
-
$655 AUD
£361 GBP
View
A
Retailer 7
-
$708 AUD
$496 USD
View
Retailer 8
-
$932 AUD
$653 USD
View
B+
Retailer 9
-
$1,161 AUD
SGD 1,100 SGD
View
B+
Retailer 10
-
$1,223 AUD
$857 USD
View
B+
Retailer 11
-
$1,370 AUD
$960 USD
View
B+
Retailer 12
-
$1,384 AUD
$970 USD
View
B
Retailer 13
-
$1,541 AUD
$1,080 USD
View
B
Retailer 14
-
$1,676 AUD
£925 GBP
View
Most Expensive
B
Reve Diamonds
EF5D41078 · Nov 1
$1,710 AUD
$1,199 USD
View
14 more retailers have this diamond
Prices start from $321 AUDSave up to $1,389 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
1.55ct Cushion
$321 AUD