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Cushion|Lab Grown|IGI

3.05ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG685578140

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG685578140

Diamond specifications and retailer prices

From $687 USD
As of October 29, 2026
Save $6,873 USD (91%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,560 USD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG685578140 or 685578140. Listed at 16 retailers as of October 28, 2026, with prices from $687 to $7,560, a $6,873 spread on the same certified stone. Do Amore Diamonds lists it at $7,560. 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
E
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685578140
Dimensions8.36 × 8.36 × 5.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.36 mm8.36 mm3.05 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685578140
Side View
Table 63.0%Crown 38.2°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 66.4%

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: Oct 29
Current: $5,460 USD|Low: $687 USD|High: $7,760 USD|Avg: $2,452 USD|-11.2%
Do Amore Diamonds
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
October 29, 2026
Retailer 14$687 USD
Retailer 6$804 USD
Retailer 11$890 USD
Retailer 9$1,008 USD
Retailer 10$1,253 USD
Retailer 12$1,403 USD
Retailer 4$1,783 USD
Retailer 5$1,801 USD
Retailer 7$1,828 USD
Retailer 13$2,454 USD
Retailer 3$2,828 USD
Retailer 2$3,334 USD
Do Amore Diamonds$5,460 USD
Retailer 8$6,480 USD

31 data points across 14 retailers

16 retailers$687 USD to $7,560 USD

A
Cheapest Retailer
-
$687 USD
Final sale: no returns
A
Retailer 2
-
$804 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$890 USD
View
A
Retailer 4
-
$1,008 USD
View
A
Retailer 5
-
$1,253 USD
£986 GBP
View
A
Retailer 6
-
$1,403 USD
View
A
Retailer 7
-
$1,783 USD
View
A
Retailer 8
-
$1,801 USD
A$2,770 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$1,828 USD
ZAR 29,530 ZAR
View
B+
Retailer 10
-
$2,454 USD
£1,932 GBP
View
B+
Retailer 11
-
$2,828 USD
View
B+
Retailer 12
-
$3,334 USD
£2,625 GBP
View
B
Retailer 13
-
$5,460 USD
View
B
Retailer 14
-
$6,480 USD
View
B
Retailer 15
-
$7,269 USD
View
Most Expensive
B
Do Amore Diamonds
23-685578140 · Oct 28
$7,560 USD
View
15 more retailers have this diamond
Prices start from $687 USDSave up to $6,873 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
$687 USD