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Cushion|Lab Grown|IGI

0.99ct D VVS1 Cushion Lab Grown Diamond

EX • D/VVS1 • IGI LG668446591

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG668446591

Diamond specifications and retailer prices

From £135 GBP
$181 USD
As of October 28, 2026
Save £1,149 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,284 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG668446591 or 668446591. Listed at 18 retailers as of October 28, 2026, with prices from £135 to £1,284, a £1,149 spread on the same certified stone. Do Amore Diamonds lists it at £1,284. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668446591
Dimensions6.48 × 5.29 × 3.51 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.48 mm5.29 mm0.99 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668446591
Side View
Table 64.0%Crown 33.6°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £339 GBP|Low: £99 GBP|High: £940 GBP|Avg: £489 GBP|+19.6%
Retailer 1
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
October 31, 2026
Retailer 12£135 GBP
Retailer 6£200 GBP
Retailer 7£246 GBP
Retailer 10£299 GBP
Retailer 1£339 GBP
Retailer 2£386 GBP
Retailer 13£413 GBP
Retailer 3£441 GBP
Retailer 11£555 GBP
Retailer 15£662 GBP
Retailer 5£664 GBP
Retailer 14£775 GBP
Retailer 9£802 GBP
Retailer 4£864 GBP
Retailer 8£940 GBP

34 data points across 15 retailers

18 retailers£135 GBP to £1,284 GBP

A+
Cheapest Retailer
-
£135 GBP
$181 USD
Final sale: no returns
B+
Retailer 2
-
£200 GBP
$268 USD
View
A
Retailer 3
-
£246 GBP
$330 USD
View
A
Retailer 4
-
£299 GBP
ZAR 6,476 ZAR
View
A
Retailer 5
-
£339 GBP
€433 EUR
View
A
Retailer 6
-
£386 GBP
$517 USD
View
A
Retailer 7
-
£413 GBP
A$851 AUD
View
B+
Retailer 8
-
£441 GBP
CA$820 CAD
View
B+
Retailer 9
-
£555 GBP
A$1,144 AUD
View
B+
Retailer 10
-
£662 GBP
$886 USD
View
B
Retailer 11
-
£664 GBP
$890 USD
View
B+
Retailer 12
-
£775 GBP
View
B+
Retailer 13
-
£802 GBP
$1,075 USD
View
Retailer 14
-
£864 GBP
View
Price last confirmed 12 days ago
B
Retailer 15
-
£933 GBP
$1,250 USD
View
B
Retailer 16
-
£933 GBP
$1,250 USD
View
B
Retailer 17
-
£940 GBP
$1,260 USD
View
Most Expensive
B
Do Amore Diamonds
32-LG668446591 · Oct 30
£1,284 GBP
$1,720 USD
View
17 more retailers have this diamond
Prices start from £135 GBPSave up to £1,149 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+
0.99ct Cushion
£135 GBP