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Cushion|Lab Grown|IGI

1.17ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG788683575

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG788683575

Diamond specifications and retailer prices

From £278 GBP
As of November 4, 2026
Save £493 GBP (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,000 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.17ct lab-grown cushion diamond

This 1.17ct lab-grown cushion sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG788683575 or 788683575. Listed at 11 retailers as of November 4, 2026, with a 177% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.17
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788683575
Dimensions8.56 × 5.33 × 2.88 mm
L/W Ratio1.61
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.56 mm5.33 mm1.17 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788683575
Side View
Table 56.0%Crown 38.5°Girdle: MED-STKPavilion 34.2°Culet: LargeDepth 54.0%

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 4
Current: £529 GBP|Low: £168 GBP|High: £1,000 GBP|Avg: £540 GBP|+9.5%
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
November 2, 2026
Retailer 9£186 GBP
Retailer 10£278 GBP
Retailer 6£336 GBP
Retailer 7£336 GBP
Retailer 13£387 GBP
Retailer 2£459 GBP
Retailer 1£529 GBP
Retailer 12£561 GBP
Retailer 5£607 GBP
Retailer 4£677 GBP
Retailer 8£770 GBP
Retailer 3£773 GBP
Retailer 11£918 GBP
Reve Diamonds£1,000 GBP

28 data points across 14 retailers

11 retailers£278 GBP to £770 GBP

A
Cheapest Retailer
-
£278 GBP
A
Retailer 2
-
£336 GBP
View
A
Retailer 3
-
£336 GBP
View
Retailer 4
-
£387 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£459 GBP
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£529 GBP
View
Retailer 7
-
£561 GBP
View
Price last confirmed 11 days ago
B
Retailer 8
-
£770 GBP
View
Retailer 9
-
£773 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£918 GBP
View
Price last confirmed 9 days ago
Most Expensive
Reve Diamonds
73D0A6351 · Oct 25
£1,000 GBP
$1,350 USD
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £278 GBPSave up to £493 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
1.17ct Cushion
£278 GBP