CaratHunter
Plans
Marquise|Lab Grown|IGI

8.57ct I VS1 Marquise Lab Grown Diamond

I/VS1 • IGI LG644481798

Certificate IGI LG644481798

Diamond specifications and retailer prices

From $8,883 AUD
$6,240 USD
As of October 30, 2026
Save $1,780 AUD (17%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $10,663 AUD at Kay Jewelers · As of November 1, 2026
View at Kay Jewelers

About this 8.57ct lab-grown marquise diamond

This 8.57ct lab-grown marquise sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included) and certified by IGI LG644481798 or 644481798. Listed at 3 retailers as of October 30, 2026, with prices from $8,883 to $10,663, a $1,780 spread on the same certified stone. Kay Jewelers lists it at $10,663. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

8.57
Carat
I
Colour
VS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG644481798
Dimensions22.87 × 10.62 mm
L/W Ratio2.15
Top View
22.87 mm10.62 mm8.57 ctI / VS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644481798
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 58.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $10,663 AUD|Low: $8,385 AUD|High: $13,040 AUD|Avg: $10,893 AUD|-18.2%
Kay Jewelers
Retailer 2
Retailer 3
April 27, 2026
Retailer 3$8,883 AUD
Kay Jewelers$10,663 AUD
Retailer 2$10,663 AUD

8 data points across 3 retailers

3 retailers$8,883 AUD to $10,663 AUD

B
Cheapest Retailer
-
$8,883 AUD
$6,240 USD
B
Retailer 2
-
$10,663 AUD
$7,490 USD
View
Most Expensive
B
Kay Jewelers
252024242 · Nov 1
$10,663 AUD
$7,490 USD
View
2 more retailers have this diamond
Prices start from $8,883 AUDSave up to $1,780 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.

B
8.57ct Marquise
$8,883 AUD