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Cushion|Lab Grown|IGI

1.03ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG689561920

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689561920

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)
19 retailers carry this diamond
Most expensive: £851 GBP at Brilliant Earth · As of October 2, 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 LG689561920 or 689561920. Listed at 19 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 angle36.2°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561920
Dimensions5.33 × 5.33 × 7.13 mm
L/W Ratio1.00
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
5.33 mm5.33 mm1.03 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561920
Side View
Table 63.0%Crown 36.2°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
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: £136 GBP|Low: £135 GBP|High: £803 GBP|Avg: £359 GBP|-16.9%
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 30, 2026
Retailer 1£136 GBP
Retailer 6£151 GBP
Retailer 12£259 GBP
Retailer 16£260 GBP
Retailer 9£267 GBP
Retailer 10£270 GBP
Retailer 4£272 GBP
Retailer 11£287 GBP
Retailer 2£332 GBP
Retailer 14£368 GBP
Retailer 3£393 GBP
Retailer 13£475 GBP
Retailer 8£507 GBP
Retailer 7£526 GBP
Retailer 15£707 GBP
Retailer 5£803 GBP

43 data points across 16 retailers

19 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
-
£267 GBP
View
A
Retailer 6
-
£270 GBP
€344 EUR
View
A
Retailer 7
-
£272 GBP
$364 USD
View
A
Retailer 8
-
£287 GBP
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
Retailer 13
-
£447 GBP
$599 USD
View
Price last confirmed 87 days ago
B+
Retailer 14
-
£475 GBP
A$979 AUD
View
B
Retailer 15
-
£517 GBP
$693 USD
View
B
Retailer 16
-
£526 GBP
$705 USD
View
B
Retailer 17
-
£707 GBP
View
B
Retailer 18
-
£803 GBP
$1,076 USD
View
Most Expensive
Brilliant Earth
20627687A · Oct 2
£851 GBP
$1,140 USD
View
Price last confirmed 28 days ago
18 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