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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 $855 USD
As of October 31, 2026
Save $3,845 USD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,700 USD 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 $855 to $4,700, a $3,845 spread on the same certified stone. Brilliant Earth lists it at $4,700. 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
Color
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

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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: Oct 31
Current: $4,700 USD|Low: $722 USD|High: $5,890 USD|Avg: $1,752 USD|-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
October 31, 2026
Retailer 4$722 USD
Retailer 13$855 USD
Retailer 14$968 USD
Retailer 2$1,084 USD
Retailer 10$1,128 USD
Retailer 5$1,256 USD
Retailer 9$1,525 USD
Retailer 12$1,632 USD
Retailer 3$2,103 USD
Retailer 15$2,159 USD
Retailer 6$2,280 USD
Retailer 8$2,305 USD
Retailer 7$2,338 USD
Retailer 11$3,138 USD
Brilliant Earth$4,700 USD

40 data points across 15 retailers

18 retailers$855 USD to $4,700 USD

Retailer 1
-
$582 USD
Price last confirmed 33 days ago
Retailer 2
-
$652 USD
View
Price last confirmed 38 days ago
Retailer 3
-
$713 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$855 USD
View
A
Retailer 5
-
$968 USD
View
A
Retailer 6
-
$1,084 USD
€1,032 EUR
View
A
Retailer 7
-
$1,128 USD
£888 GBP
View
A
Retailer 8
-
$1,256 USD
View
B+
Retailer 9
-
$1,525 USD
A$2,346 AUD
View
B+
Retailer 10
-
$1,632 USD
View
Retailer 11
-
$1,899 USD
View
Price last confirmed 31 days ago
Retailer 12
-
$2,103 USD
£1,656 GBP
View
Price last confirmed 16 days ago
Retailer 13
-
$2,159 USD
A$3,322 AUD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$2,280 USD
SGD 3,081 SGD
View
B+
Retailer 15
-
$2,305 USD
View
B+
Retailer 16
-
$2,338 USD
View
B
Retailer 17
-
$3,138 USD
£2,471 GBP
View
Most Expensive
B
Brilliant Earth
21728218A · Oct 31
$4,700 USD
View
17 more retailers have this diamond
Prices start from $855 USDSave up to $3,845 USD

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
$855 USD