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Cushion|Lab Grown|IGI

3.05ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG574326311

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG574326311

Diamond specifications and retailer prices

From $680 USD
As of November 1, 2026
Save $4,100 USD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,780 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG574326311 or 574326311. Listed at 15 retailers as of October 31, 2026, with prices from $680 to $4,780, a $4,100 spread on the same certified stone. Brilliant Earth lists it at $4,780. 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

3.05
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574326311
Dimensions9.25 × 7.68 × 5.12 mm
L/W Ratio1.20
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
9.25 mm7.68 mm3.05 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574326311
Side View
Table 62.0%Crown 33.6°Girdle: MED-STKPavilion 34.8°Culet: NoneDepth 66.7%

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 1
Current: $4,780 USD|Low: $599 USD|High: $4,930 USD|Avg: $1,766 USD
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
November 2, 2026
Retailer 4$680 USD
Retailer 12$754 USD
Retailer 10$870 USD
Retailer 3$1,024 USD
Retailer 13$1,116 USD
Retailer 11$1,155 USD
Retailer 2$1,180 USD
Retailer 8$1,593 USD
Retailer 9$1,638 USD
Retailer 14$2,195 USD
Retailer 6$2,438 USD
Retailer 5$2,496 USD
Retailer 7$3,274 USD
Brilliant Earth$4,780 USD

43 data points across 14 retailers

15 retailers$680 USD to $4,780 USD

A
Cheapest Retailer
-
$680 USD
Final sale: no returns
Retailer 2
-
$754 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$870 USD
View
A
Retailer 4
-
$1,024 USD
View
A
Retailer 5
-
$1,116 USD
View
A
Retailer 6
-
$1,155 USD
View
A
Retailer 7
-
$1,180 USD
£929 GBP
View
B+
Retailer 8
-
$1,593 USD
A$2,451 AUD
View
B+
Retailer 9
-
$1,638 USD
ZAR 26,456 ZAR
View
B+
Retailer 10
-
$2,195 USD
£1,728 GBP
View
B+
Retailer 11
-
$2,419 USD
HK$18,900 HKD
View
B+
Retailer 12
-
$2,438 USD
View
B
Retailer 13
-
$2,496 USD
View
B
Retailer 14
-
$3,274 USD
£2,578 GBP
View
Most Expensive
B
Brilliant Earth
17969224A · Oct 31
$4,780 USD
View
14 more retailers have this diamond
Prices start from $680 USDSave up to $4,100 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
3.05ct Cushion
$680 USD