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Cushion|Lab Grown|IGI

0.99ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG794641766

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

Certificate IGI LG794641766

Diamond specifications and retailer prices

From £141 GBP
$189 USD
As of November 1, 2026
Save £677 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £818 GBP at Flawless Fine Jewelry · As of November 2, 2026
View at Flawless Fine Jewelry

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 LG794641766 or 794641766. Listed at 18 retailers as of November 1, 2026, with prices from £141 to £818, a £677 spread on the same certified stone. Flawless Fine Jewelry lists it at £818. 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 angle35.6°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794641766
Dimensions5.94 × 5.79 × 3.76 mm
L/W Ratio1.03
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
5.94 mm5.79 mm0.99 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794641766
Side View
Table 62.0%Crown 35.6°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 64.9%

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: Nov 1
Current: £818 GBP|Low: £136 GBP|High: £818 GBP|Avg: £347 GBP
Flawless Fine Jewelry
Retailer 2
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Retailer 12
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Retailer 18
November 2, 2026
Retailer 13£141 GBP
Retailer 10£152 GBP
Retailer 2£201 GBP
Retailer 18£259 GBP
Retailer 16£265 GBP
Retailer 11£278 GBP
Retailer 4£279 GBP
Retailer 14£284 GBP
Retailer 7£288 GBP
Retailer 12£389 GBP
Retailer 9£395 GBP
Retailer 17£396 GBP
Retailer 8£405 GBP
Retailer 3£462 GBP
Retailer 6£543 GBP
Retailer 15£730 GBP
Retailer 5£816 GBP
Flawless Fine Jewelry£818 GBP

34 data points across 18 retailers

18 retailers£141 GBP to £818 GBP

A
Cheapest Retailer
-
£141 GBP
$189 USD
Final sale: no returns
Retailer 2
-
£152 GBP
$204 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£201 GBP
View
A
Retailer 4
-
£259 GBP
$348 USD
View
A
Retailer 5
-
£265 GBP
€339 EUR
View
A
Retailer 6
-
£278 GBP
View
A
Retailer 7
-
£279 GBP
$375 USD
View
A
Retailer 8
-
£284 GBP
ZAR 6,152 ZAR
View
A
Retailer 9
-
£288 GBP
View
B+
Retailer 10
-
£389 GBP
A$804 AUD
View
Retailer 11
-
£395 GBP
$530 USD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
£396 GBP
$531 USD
View
B+
Retailer 13
-
£405 GBP
A$836 AUD
View
B+
Retailer 14
-
£462 GBP
$620 USD
View
B+
Retailer 15
-
£543 GBP
$728 USD
View
B
Retailer 16
-
£730 GBP
View
B
Retailer 17
-
£816 GBP
$1,095 USD
View
Most Expensive
B
Flawless Fine Jewelry
33D827FF4 · Nov 2
£818 GBP
View
17 more retailers have this diamond
Prices start from £141 GBPSave up to £677 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
£141 GBP