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Cushion|Lab Grown|IGI

0.99ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG681521978

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG681521978

Diamond specifications and retailer prices

From £133 GBP
$178 USD
As of October 30, 2026
Save £662 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £795 GBP at Reve Diamonds · As of October 30, 2026
View at Reve 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG681521978 or 681521978. Listed at 14 retailers as of October 30, 2026, with prices from £133 to £795, a £662 spread on the same certified stone. Reve Diamonds lists it at £795. 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 angle29.9°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681521978
Dimensions6.86 × 5.32 × 3.61 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm5.32 mm0.99 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681521978
Side View
Table 63.0%Crown 29.9°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
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 30
Current: £263 GBP|Low: £133 GBP|High: £798 GBP|Avg: £383 GBP|+1.8%
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
Reve Diamonds
October 31, 2026
Retailer 13£133 GBP
Retailer 12£191 GBP
Retailer 5£257 GBP
Retailer 6£260 GBP
Retailer 1£263 GBP
Retailer 9£267 GBP
Retailer 4£268 GBP
Retailer 8£280 GBP
Retailer 10£368 GBP
Retailer 2£384 GBP
Retailer 3£516 GBP
Retailer 11£605 GBP
Retailer 7£694 GBP
Reve Diamonds£795 GBP

39 data points across 14 retailers

14 retailers£133 GBP to £795 GBP

A
Cheapest Retailer
-
£133 GBP
$178 USD
Final sale: no returns
Retailer 2
-
£191 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
£257 GBP
$345 USD
View
A
Retailer 4
-
£260 GBP
View
A
Retailer 5
-
£263 GBP
€336 EUR
View
A
Retailer 6
-
£267 GBP
ZAR 5,777 ZAR
View
A
Retailer 7
-
£268 GBP
$359 USD
View
A
Retailer 8
-
£280 GBP
View
A
Retailer 9
-
£368 GBP
A$758 AUD
View
B+
Retailer 10
-
£384 GBP
$514 USD
View
B+
Retailer 11
-
£516 GBP
$691 USD
View
B+
Retailer 12
-
£605 GBP
$810 USD
View
B
Retailer 13
-
£694 GBP
View
Most Expensive
B
Reve Diamonds
29DCB9CF4 · Oct 30
£795 GBP
$1,065 USD
View
13 more retailers have this diamond
Prices start from £133 GBPSave up to £662 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
£133 GBP