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 $5,685 NZD
$3,204 USD
As of October 29, 2026
Save $15,955 NZD (74%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $31,316 NZD 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: $7,027 NZD|Low: $5,685 NZD|High: $21,936 NZD|Avg: $11,764 NZD|-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$5,685 NZD
Retailer 9$5,994 NZD
Retailer 17$6,175 NZD
Retailer 16$6,400 NZD
Retailer 1$7,027 NZD
Retailer 10$7,955 NZD
Retailer 14$8,414 NZD
Retailer 12$8,974 NZD
Retailer 11$9,874 NZD
Retailer 3$10,167 NZD
Retailer 4$10,926 NZD
Retailer 13$15,003 NZD
Retailer 8$15,124 NZD
Retailer 6$20,514 NZD
Retailer 7$20,785 NZD
Retailer 2$21,274 NZD
Retailer 15$21,639 NZD

21 data points across 17 retailers

19 retailers$5,685 NZD to $21,639 NZD

A
Cheapest Retailer
-
$5,685 NZD
$3,204 USD
Final sale: no returns
Retailer 2
-
$5,994 NZD
$3,378 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$6,175 NZD
$3,480 USD
View
A
Retailer 4
-
$6,400 NZD
$3,607 USD
View
A
Retailer 5
-
$7,027 NZD
£3,118 GBP
View
A
Retailer 6
-
$7,955 NZD
£3,530 GBP
View
A
Retailer 7
-
$8,414 NZD
$4,742 USD
View
A
Retailer 8
-
$8,974 NZD
€4,817 EUR
View
B+
Retailer 9
-
$9,874 NZD
ZAR 89,906 ZAR
View
B+
Retailer 10
-
$10,167 NZD
£4,512 GBP
View
Retailer 11
-
$10,926 NZD
A$9,474 AUD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$15,003 NZD
£6,658 GBP
View
B+
Retailer 13
-
$15,124 NZD
$8,524 USD
View
B+
Retailer 14
-
$20,514 NZD
$11,562 USD
View
B
Retailer 15
-
$20,785 NZD
SGD 15,830 SGD
View
B
Retailer 16
-
$21,274 NZD
$11,990 USD
View
B
Retailer 17
-
$21,639 NZD
$12,196 USD
View
Retailer 18
-
$26,578 NZD
A$23,045 AUD
View
Price last confirmed 21 days ago
Most Expensive
Helzberg Diamonds
ZXZOJPMLHKKI · Oct 13
$31,316 NZD
$17,650 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $5,685 NZDSave up to $15,955 NZD

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
$5,685 NZD