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Cushion|Lab Grown|IGI

0.99ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG764610721

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

Certificate IGI LG764610721

Diamond specifications and retailer prices

From £149 GBP
$199 USD
As of October 30, 2026
Save £979 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,128 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG764610721 or 764610721. Listed at 19 retailers as of October 27, 2026, with prices from £149 to £1,128, a £979 spread on the same certified stone. Queensmith lists it at £1,128. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764610721
Dimensions5.78 × 5.72 × 3.88 mm
L/W Ratio1.01
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
5.78 mm5.72 mm0.99 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG764610721
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 67.8%

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 30
Current: £295 GBP|Low: £149 GBP|High: £777 GBP|Avg: £344 GBP|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3£149 GBP
Retailer 10£164 GBP
Retailer 11£222 GBP
Retailer 1£295 GBP
Retailer 6£297 GBP
Retailer 4£305 GBP
Retailer 2£343 GBP
Retailer 8£399 GBP
Retailer 7£409 GBP
Retailer 9£412 GBP
Retailer 5£772 GBP

44 data points across 11 retailers

19 retailers£149 GBP to £1,128 GBP

A
Cheapest Retailer
-
£149 GBP
$199 USD
Final sale: no returns
A
Retailer 2
-
£164 GBP
$220 USD
View
A
Retailer 3
-
£182 GBP
HK$1,900 HKD
View
A
Retailer 4
-
£222 GBP
$298 USD
View
A
Retailer 5
-
£262 GBP
$351 USD
View
A
Retailer 6
-
£295 GBP
View
A
Retailer 7
-
£297 GBP
ZAR 6,426 ZAR
View
A
Retailer 8
-
£305 GBP
€389 EUR
View
A
Retailer 9
-
£343 GBP
$459 USD
View
Retailer 10
-
£399 GBP
$535 USD
View
Price last confirmed 13 days ago
B+
Retailer 11
-
£409 GBP
A$844 AUD
View
B+
Retailer 12
-
£412 GBP
$552 USD
View
B+
Retailer 13
-
£448 GBP
SGD 812 SGD
View
B+
Retailer 14
-
£546 GBP
$731 USD
View
B
Retailer 15
-
£569 GBP
$762 USD
View
B
Retailer 16
-
£772 GBP
View
B
Retailer 17
-
£837 GBP
$1,122 USD
View
B
Retailer 18
-
£853 GBP
View
Most Expensive
B
Queensmith
LG764610721 · Oct 27
£1,128 GBP
View
18 more retailers have this diamond
Prices start from £149 GBPSave up to £979 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
£149 GBP