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Cushion|Lab Grown|IGI

1.03ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG689562258

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562258

Diamond specifications and retailer prices

From £136 GBP
$182 USD
As of October 30, 2026
Save £667 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £851 GBP at Brilliant Earth · As of September 26, 2026
View at Brilliant Earth

About this 1.03ct lab-grown cushion diamond

This 1.03ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG689562258 or 689562258. Listed at 18 retailers as of October 30, 2026, with a 491% 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

1.03
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562258
Dimensions6.72 × 5.39 × 3.62 mm
L/W Ratio1.25
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
6.72 mm5.39 mm1.03 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562258
Side View
Table 60.0%Crown 36.1°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 67.2%

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: £265 GBP|Low: £135 GBP|High: £803 GBP|Avg: £361 GBP|+4.8%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 6£136 GBP
Retailer 5£151 GBP
Retailer 12£259 GBP
Retailer 15£260 GBP
Retailer 1£265 GBP
Retailer 3£272 GBP
Retailer 11£287 GBP
Retailer 9£294 GBP
Retailer 16£332 GBP
Retailer 14£368 GBP
Retailer 2£393 GBP
Retailer 13£475 GBP
Retailer 8£507 GBP
Retailer 7£526 GBP
Retailer 10£710 GBP
Retailer 4£803 GBP

45 data points across 16 retailers

18 retailers£136 GBP to £803 GBP

A
Cheapest Retailer
-
£136 GBP
$182 USD
Final sale: no returns
A
Retailer 2
-
£151 GBP
$202 USD
View
A
Retailer 3
-
£259 GBP
ZAR 5,610 ZAR
View
A
Retailer 4
-
£260 GBP
$348 USD
View
A
Retailer 5
-
£265 GBP
View
A
Retailer 6
-
£272 GBP
$364 USD
View
A
Retailer 7
-
£287 GBP
View
A
Retailer 8
-
£294 GBP
€375 EUR
View
B+
Retailer 9
-
£332 GBP
$445 USD
View
B+
Retailer 10
-
£368 GBP
A$758 AUD
View
B+
Retailer 11
-
£393 GBP
$526 USD
View
Retailer 12
-
£426 GBP
$570 USD
View
Price last confirmed 60 days ago
B+
Retailer 13
-
£475 GBP
A$979 AUD
View
B
Retailer 14
-
£517 GBP
$693 USD
View
B
Retailer 15
-
£526 GBP
$705 USD
View
B
Retailer 16
-
£710 GBP
View
B
Retailer 17
-
£803 GBP
$1,076 USD
View
Most Expensive
Brilliant Earth
20622999A · Sep 26
£851 GBP
$1,140 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from £136 GBPSave up to £667 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
1.03ct Cushion
£136 GBP