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Cushion|Lab Grown|IGI

8.57ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG839651442

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839651442

Diamond specifications and retailer prices

From $4,561 AUD
$3,204 USD
As of October 29, 2026
Save $12,799 AUD (74%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $25,123 AUD at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 8.57ct lab-grown cushion diamond

This 8.57ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG839651442 or 839651442. Listed at 19 retailers as of October 29, 2026, with a 281% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

8.57
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839651442
Dimensions14.72 × 10.55 × 6.66 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.72 mm10.55 mm8.57 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839651442
Side View
Table 65.0%Crown 37.5°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,637 AUD|Low: $4,561 AUD|High: $17,597 AUD|Avg: $9,437 AUD|-2.7%
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
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 5$4,561 AUD
Retailer 9$4,808 AUD
Retailer 17$4,953 AUD
Retailer 16$5,134 AUD
Retailer 1$5,637 AUD
Retailer 10$6,382 AUD
Retailer 14$6,750 AUD
Retailer 12$7,199 AUD
Retailer 11$7,921 AUD
Retailer 3$8,156 AUD
Retailer 4$8,765 AUD
Retailer 13$12,036 AUD
Retailer 8$12,133 AUD
Retailer 6$16,457 AUD
Retailer 7$16,674 AUD
Retailer 2$17,067 AUD
Retailer 15$17,360 AUD

21 data points across 17 retailers

19 retailers$4,561 AUD to $17,360 AUD

A
Cheapest Retailer
-
$4,561 AUD
$3,204 USD
Final sale: no returns
Retailer 2
-
$4,808 AUD
$3,378 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$4,953 AUD
$3,480 USD
View
A
Retailer 4
-
$5,134 AUD
$3,607 USD
View
A
Retailer 5
-
$5,637 AUD
£3,118 GBP
View
A
Retailer 6
-
$6,382 AUD
£3,530 GBP
View
A
Retailer 7
-
$6,750 AUD
$4,742 USD
View
A
Retailer 8
-
$7,199 AUD
€4,817 EUR
View
B+
Retailer 9
-
$7,921 AUD
ZAR 89,906 ZAR
View
B+
Retailer 10
-
$8,156 AUD
£4,512 GBP
View
Retailer 11
-
$8,765 AUD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$12,036 AUD
£6,658 GBP
View
B+
Retailer 13
-
$12,133 AUD
$8,524 USD
View
B+
Retailer 14
-
$16,457 AUD
$11,562 USD
View
B
Retailer 15
-
$16,674 AUD
SGD 15,830 SGD
View
B
Retailer 16
-
$17,067 AUD
$11,990 USD
View
B
Retailer 17
-
$17,360 AUD
$12,196 USD
View
Retailer 18
-
$21,321 AUD
View
Price last confirmed 21 days ago
Most Expensive
Helzberg Diamonds
ZXZOJPMLHKKI · Oct 13
$25,123 AUD
$17,650 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $4,561 AUDSave up to $12,799 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
8.57ct Cushion
$4,561 AUD