CaratHunter
Plans
Marquise|Lab Grown|IGI

6.83ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG598343686

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG598343686

Diamond specifications and retailer prices

From $1,579 AUD
$1,109 USD
As of October 30, 2026
Save $6,586 AUD (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $14,022 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 6.83ct lab-grown marquise diamond

This 6.83ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG598343686 or 598343686. Listed at 9 retailers as of October 28, 2026, with a 417% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.83
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598343686
Dimensions20.19 × 9.92 × 5.99 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
20.19 mm9.92 mm6.83 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598343686
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.4%

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 30
Current: $14,022 AUD|Low: $1,553 AUD|High: $15,830 AUD|Avg: $6,654 AUD|-7.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8$1,579 AUD
Retailer 6$1,717 AUD
Retailer 10$2,913 AUD
Retailer 4$2,918 AUD
Retailer 7$3,714 AUD
Retailer 9$3,788 AUD
Retailer 11$4,410 AUD
Retailer 2$6,529 AUD
Retailer 5$8,164 AUD
Do Amore Diamonds$14,022 AUD
Retailer 3$15,830 AUD

18 data points across 11 retailers

9 retailers$1,579 AUD to $8,164 AUD

A
Cheapest Retailer
-
$1,579 AUD
$1,109 USD
A
Retailer 2
-
$1,717 AUD
$1,206 USD
View
B+
Retailer 3
-
$2,913 AUD
$2,046 USD
View
B+
Retailer 4
-
$2,918 AUD
$2,050 USD
View
B+
Retailer 5
-
$3,714 AUD
$2,609 USD
View
B+
Retailer 6
-
$3,788 AUD
$2,661 USD
View
B
Retailer 7
-
$6,529 AUD
£3,611 GBP
View
B
Retailer 8
-
$8,164 AUD
$5,735 USD
View
Most Expensive
Do Amore Diamonds
27-7B18349BC · Oct 29
$14,022 AUD
$9,850 USD
View
Price under review
8 more retailers have this diamond
Prices start from $1,579 AUDSave up to $6,586 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
6.83ct Marquise
$1,579 AUD