Cushion|Lab Grown|IGI

3.10ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG844685029

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG844685029

Diamond specifications and retailer prices

From £458 GBP
$614 USD
As of October 29, 2026
Save £2,630 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,088 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG844685029 or 844685029. Listed at 15 retailers as of October 29, 2026, with prices from £458 to £3,088, a £2,630 spread on the same certified stone. Helzberg Diamonds lists it at £3,088. 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

3.10
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844685029
Dimensions8.37 × 8.24 × 5.38 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.37 mm8.24 mm3.10 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844685029
Side View
Table 62.0%Crown 36.2°Girdle: MED-THKPavilion 35.9°Culet: NoneDepth 65.3%

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 29
Current: £3,088 GBP|Low: £458 GBP|High: £3,088 GBP|Avg: £1,383 GBP
Helzberg 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
Retailer 15
November 1, 2026
Retailer 3£458 GBP
Retailer 12£522 GBP
Retailer 8£590 GBP
Retailer 4£651 GBP
Retailer 13£684 GBP
Retailer 9£738 GBP
Retailer 11£1,067 GBP
Retailer 14£1,107 GBP
Retailer 7£1,697 GBP
Retailer 10£1,820 GBP
Retailer 2£1,967 GBP
Retailer 5£2,125 GBP
Retailer 15£2,288 GBP
Retailer 6£3,038 GBP
Helzberg Diamonds£3,088 GBP

12 data points across 15 retailers

15 retailers£458 GBP to £3,088 GBP

A
Cheapest Retailer
-
£458 GBP
$614 USD
Final sale: no returns
A
Retailer 2
-
£522 GBP
$700 USD
View
A
Retailer 3
-
£590 GBP
View
B+
Retailer 4
-
£651 GBP
$872 USD
View
A
Retailer 5
-
£684 GBP
$916 USD
View
A
Retailer 6
-
£738 GBP
€942 EUR
View
A
Retailer 7
-
£1,067 GBP
$1,429 USD
View
A
Retailer 8
-
£1,107 GBP
$1,483 USD
View
B+
Retailer 9
-
£1,697 GBP
$2,274 USD
View
B+
Retailer 10
-
£1,820 GBP
A$3,751 AUD
View
B+
Retailer 11
-
£1,967 GBP
View
B
Retailer 12
-
£2,125 GBP
$2,847 USD
View
Retailer 13
-
£2,288 GBP
$3,065 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
£3,038 GBP
$4,070 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKKMOLGIP · Nov 1
£3,088 GBP
$4,138 USD
View
14 more retailers have this diamond
Prices start from £458 GBPSave up to £2,630 GBP

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
3.10ct Cushion
£458 GBP