CaratHunter
Plans
Cushion|Lab Grown|IGI

8.51ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG647454568

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG647454568

Diamond specifications and retailer prices

From $3,397 AUD
$2,386 USD
As of November 1, 2026
Save $17,473 AUD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,870 AUD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 8.51ct lab-grown cushion diamond

This 8.51ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG647454568 or 647454568. Listed at 14 retailers as of November 1, 2026, with prices from $3,397 to $20,870, a $17,473 spread on the same certified stone. Do Amore Diamonds lists it at $20,870. 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

8.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647454568
Dimensions14.75 × 10.31 × 6.80 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.75 mm10.31 mm8.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647454568
Side View
Table 64.0%Crown 37.7°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 66.0%

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: Nov 1
Current: $20,870 AUD|Low: $3,397 AUD|High: $22,237 AUD|Avg: $8,184 AUD|-6.1%
Do Amore Diamonds
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
November 1, 2026
Retailer 13$3,397 AUD
Retailer 16$3,518 AUD
Retailer 12$3,751 AUD
Retailer 3$4,104 AUD
Retailer 5$4,154 AUD
Retailer 10$4,620 AUD
Retailer 8$4,719 AUD
Retailer 15$4,940 AUD
Retailer 11$6,512 AUD
Retailer 9$7,195 AUD
Retailer 4$7,377 AUD
Retailer 14$9,861 AUD
Retailer 2$10,396 AUD
Retailer 6$13,560 AUD
Retailer 7$17,795 AUD
Do Amore Diamonds$20,870 AUD

29 data points across 16 retailers

14 retailers$3,397 AUD to $20,870 AUD

A
Cheapest Retailer
-
$3,397 AUD
$2,386 USD
Final sale: no returns
Retailer 2
-
$3,518 AUD
$2,471 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$3,751 AUD
$2,635 USD
View
A
Retailer 4
-
$4,104 AUD
$2,883 USD
View
A
Retailer 5
-
$4,154 AUD
$2,918 USD
View
A
Retailer 6
-
$4,620 AUD
£2,556 GBP
View
A
Retailer 7
-
$4,940 AUD
$3,470 USD
View
B+
Retailer 8
-
$6,512 AUD
ZAR 73,903 ZAR
View
B+
Retailer 9
-
$7,195 AUD
View
B+
Retailer 10
-
$7,377 AUD
£4,080 GBP
View
B
Retailer 11
-
$9,861 AUD
$6,927 USD
View
B
Retailer 12
-
$10,396 AUD
£5,750 GBP
View
B
Retailer 13
-
$13,560 AUD
$9,525 USD
View
Most Expensive
B
Do Amore Diamonds
27-522F630BB · Nov 1
$20,870 AUD
$14,660 USD
View
13 more retailers have this diamond
Prices start from $3,397 AUDSave up to $17,473 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
8.51ct Cushion
$3,397 AUD