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Cushion|Lab Grown|IGI

1.65ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG809691799

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG809691799

Diamond specifications and retailer prices

From £189 GBP
$253 USD
As of October 31, 2026
Save £663 GBP (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £852 GBP at Brilliance · As of October 30, 2026
View at Brilliance

About this 1.65ct lab-grown cushion diamond

This 1.65ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG809691799 or 809691799. Listed at 14 retailers as of October 30, 2026, with prices from £189 to £852, a £663 spread on the same certified stone. Brilliance lists it at £852. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809691799
Dimensions8.38 × 6.07 × 4.06 mm
L/W Ratio1.38
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.38 mm6.07 mm1.65 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809691799
Side View
Table 60.0%Crown 36.1°Girdle: THK-VTKPavilion 38.5°Culet: NoneDepth 66.9%

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: £852 GBP|Low: £189 GBP|High: £881 GBP|Avg: £515 GBP|-3.3%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 12£189 GBP
Retailer 9£210 GBP
Retailer 3£356 GBP
Retailer 7£360 GBP
Retailer 2£391 GBP
Retailer 11£450 GBP
Retailer 10£458 GBP
Retailer 8£489 GBP
Retailer 4£682 GBP
Retailer 13£712 GBP
Retailer 5£827 GBP
Retailer 6£844 GBP
Brilliance£852 GBP

43 data points across 13 retailers

14 retailers£189 GBP to £852 GBP

A
Cheapest Retailer
-
£189 GBP
$253 USD
Final sale: no returns
A
Retailer 2
-
£210 GBP
$281 USD
View
B+
Retailer 3
-
£356 GBP
$477 USD
View
A
Retailer 4
-
£360 GBP
ZAR 7,788 ZAR
View
A
Retailer 5
-
£391 GBP
View
A
Retailer 6
-
£450 GBP
$603 USD
View
A
Retailer 7
-
£458 GBP
$614 USD
View
A
Retailer 8
-
£489 GBP
A$1,008 AUD
View
B+
Retailer 9
-
£682 GBP
SGD 1,234 SGD
View
B+
Retailer 10
-
£712 GBP
$955 USD
View
B
Retailer 11
-
£821 GBP
$1,100 USD
View
Retailer 12
-
£827 GBP
A$1,705 AUD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
£844 GBP
View
Most Expensive
B
Brilliance
D42940830 · Oct 30
£852 GBP
$1,141 USD
View
13 more retailers have this diamond
Prices start from £189 GBPSave up to £663 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
1.65ct Cushion
£189 GBP