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Cushion|Lab Grown|IGI

6.58ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG710502173

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG710502173

Diamond specifications and retailer prices

From $2,827 AUD
$1,981 USD
As of November 2, 2026
Save $14,967 AUD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $17,793 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 6.58ct lab-grown cushion diamond

This 6.58ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG710502173 or 710502173. Listed at 18 retailers as of October 29, 2026, with prices from $2,827 to $17,793, a $14,967 spread on the same certified stone. Brilliant Earth lists it at $17,793. 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

6.58
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710502173
Dimensions11.98 × 9.56 × 6.51 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.98 mm9.56 mm6.58 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG710502173
Side View
Table 64.0%Crown 40.5°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 68.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $17,793 AUD|Low: $2,272 AUD|High: $18,350 AUD|Avg: $5,296 AUD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 4$2,272 AUD
Retailer 11$2,353 AUD
Retailer 10$2,597 AUD
Retailer 2$2,827 AUD
Retailer 13$3,309 AUD
Retailer 6$3,657 AUD
Retailer 9$4,821 AUD
Retailer 8$4,980 AUD
Retailer 5$6,263 AUD
Retailer 3$6,341 AUD
Retailer 12$7,397 AUD
Retailer 7$7,428 AUD
Brilliant Earth$17,793 AUD

40 data points across 13 retailers

18 retailers$2,827 AUD to $17,793 AUD

Retailer 1
-
$2,353 AUD
$1,649 USD
Price last confirmed 21 days ago
Retailer 2
-
$2,597 AUD
$1,820 USD
View
Price last confirmed 5 days ago
A
Retailer 3
-
$2,827 AUD
$1,981 USD
View
A
Retailer 4
-
$2,974 AUD
$2,084 USD
View
A
Retailer 5
-
$3,309 AUD
$2,319 USD
View
A
Retailer 6
-
$3,360 AUD
$2,355 USD
View
A
Retailer 7
-
$3,657 AUD
£2,018 GBP
View
Retailer 8
-
$4,821 AUD
View
Price last confirmed 11 days ago
Retailer 9
-
$4,980 AUD
ZAR 56,378 ZAR
View
Price last confirmed 8 days ago
B
Retailer 10
-
$6,263 AUD
£3,456 GBP
View
B
Retailer 11
-
$6,341 AUD
$4,444 USD
View
B
Retailer 12
-
$6,852 AUD
$4,802 USD
View
Retailer 13
-
$7,397 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$7,428 AUD
£4,099 GBP
View
B
Retailer 15
-
$9,164 AUD
$6,422 USD
View
B
Retailer 16
-
$13,955 AUD
$9,780 USD
View
B
Retailer 17
-
$14,811 AUD
$10,380 USD
View
Most Expensive
B
Brilliant Earth
18873951A · Oct 29
$17,793 AUD
$12,470 USD
View
17 more retailers have this diamond
Prices start from $2,827 AUDSave up to $14,967 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
6.58ct Cushion
$2,827 AUD