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Cushion|Lab Grown|IGI

3.06ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG818686311

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG818686311

Diamond specifications and retailer prices

From $1,517 NZD
$855 USD
As of November 2, 2026
Save $6,822 NZD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,339 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.06ct lab-grown cushion diamond

This 3.06ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818686311 or 818686311. Listed at 18 retailers as of October 31, 2026, with prices from $1,517 to $8,339, a $6,822 spread on the same certified stone. Brilliant Earth lists it at $8,339. 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

3.06
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686311
Dimensions9.86 × 7.40 × 4.96 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.86 mm7.40 mm3.06 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686311
Side View
Table 60.0%Crown 45.5°Girdle: STK-THKPavilion 41.3°Culet: LargeDepth 67.0%

Caratlytics Score

How it works →
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: $8,339 NZD|Low: $1,281 NZD|High: $10,451 NZD|Avg: $3,127 NZD|-20.2%
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
Retailer 14
Retailer 15
November 2, 2026
Retailer 4$1,281 NZD
Retailer 13$1,517 NZD
Retailer 14$1,718 NZD
Retailer 8$1,923 NZD
Retailer 2$2,002 NZD
Retailer 5$2,229 NZD
Retailer 10$2,706 NZD
Retailer 12$2,896 NZD
Retailer 3$3,732 NZD
Retailer 15$3,831 NZD
Retailer 6$4,045 NZD
Retailer 9$4,090 NZD
Retailer 7$4,148 NZD
Retailer 11$5,568 NZD
Brilliant Earth$8,339 NZD

41 data points across 15 retailers

18 retailers$1,517 NZD to $8,339 NZD

Retailer 1
-
$1,033 NZD
$582 USD
Price last confirmed 34 days ago
Retailer 2
-
$1,157 NZD
$652 USD
View
Price last confirmed 39 days ago
Retailer 3
-
$1,265 NZD
$713 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
$1,517 NZD
$855 USD
View
A
Retailer 5
-
$1,718 NZD
$968 USD
View
A
Retailer 6
-
$1,923 NZD
€1,032 EUR
View
A
Retailer 7
-
$2,002 NZD
£888 GBP
View
A
Retailer 8
-
$2,229 NZD
$1,256 USD
View
B+
Retailer 9
-
$2,706 NZD
A$2,346 AUD
View
B+
Retailer 10
-
$2,896 NZD
$1,632 USD
View
Retailer 11
-
$3,369 NZD
$1,899 USD
View
Price last confirmed 32 days ago
Retailer 12
-
$3,732 NZD
£1,656 GBP
View
Price last confirmed 17 days ago
Retailer 13
-
$3,831 NZD
A$3,322 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$4,045 NZD
SGD 3,081 SGD
View
B+
Retailer 15
-
$4,090 NZD
$2,305 USD
View
B+
Retailer 16
-
$4,148 NZD
$2,338 USD
View
B
Retailer 17
-
$5,568 NZD
£2,471 GBP
View
Most Expensive
B
Brilliant Earth
21728218A · Oct 31
$8,339 NZD
$4,700 USD
View
17 more retailers have this diamond
Prices start from $1,517 NZDSave up to $6,822 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
3.06ct Cushion
$1,517 NZD