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Cushion|Lab Grown|IGI

3.05ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG811666654

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811666654

Diamond specifications and retailer prices

From $690 NZD
$388 USD
As of November 1, 2026
Save $4,198 NZD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,888 NZD 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811666654 or 811666654. Listed at 4 retailers as of October 31, 2026, with prices from $690 to $4,888, a $4,198 spread on the same certified stone. Brilliant Earth lists it at $4,888. 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
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811666654
Dimensions10.24 × 7.49 × 5.03 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm7.49 mm3.05 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811666654
Side View
Table 63.0%Crown 35.7°Girdle: MED-STKPavilion 37.3°Culet: NoneDepth 67.2%

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: $4,888 NZD|Low: $690 NZD|High: $5,190 NZD|Avg: $2,182 NZD|-5.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$690 NZD
Retailer 5$1,084 NZD
Retailer 7$1,258 NZD
Retailer 2$1,419 NZD
Retailer 6$2,694 NZD
Retailer 4$3,297 NZD
Brilliant Earth$4,888 NZD

40 data points across 7 retailers

4 retailers$690 NZD to $4,888 NZD

A
Cheapest Retailer
-
$690 NZD
$388 USD
Final sale: no returns
A
Retailer 2
-
$1,419 NZD
£628 GBP
View
Retailer 3
-
$3,297 NZD
$1,855 USD
View
Price last confirmed 28 days ago
Most Expensive
B
Brilliant Earth
21247747A · Oct 31
$4,888 NZD
$2,750 USD
View
3 more retailers have this diamond
Prices start from $690 NZDSave up to $4,198 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
3.05ct Cushion
$690 NZD