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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG800677028

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

Certificate IGI LG800677028

Diamond specifications and retailer prices

From £308 GBP
As of October 30, 2026
Save £1,625 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,933 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800677028 or 800677028. Listed at 12 retailers as of October 29, 2026, with prices from £308 to £1,933, a £1,625 spread on the same certified stone. Do Amore Diamonds lists it at £1,933. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677028
Dimensions5.97 × 5.77 × 3.89 mm
L/W Ratio1.03
Girdle conditionFaceted
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
5.97 mm5.77 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677028
Side View
Table 61.0%Crown 36.9°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
A+
Exceptional
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: £1,933 GBP|Low: £307 GBP|High: £2,120 GBP|Avg: £847 GBP|-8.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 5£308 GBP
Retailer 3£357 GBP
Retailer 12£358 GBP
Retailer 8£382 GBP
Retailer 9£443 GBP
Retailer 4£466 GBP
Retailer 6£510 GBP
Retailer 11£1,011 GBP
Retailer 7£1,049 GBP
Retailer 2£1,149 GBP
Retailer 10£1,195 GBP
Do Amore Diamonds£1,933 GBP

29 data points across 12 retailers

12 retailers£308 GBP to £1,933 GBP

A+
Cheapest Retailer
-
£308 GBP
A
Retailer 2
-
£357 GBP
$479 USD
View
A
Retailer 3
-
£358 GBP
$480 USD
View
A
Retailer 4
-
£382 GBP
$512 USD
View
A
Retailer 5
-
£443 GBP
$593 USD
View
Retailer 6
-
£466 GBP
$624 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
£510 GBP
€651 EUR
View
Retailer 8
-
£1,011 GBP
$1,355 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£1,049 GBP
$1,406 USD
View
B+
Retailer 10
-
£1,149 GBP
$1,540 USD
View
B+
Retailer 11
-
£1,195 GBP
View
Most Expensive
B
Do Amore Diamonds
27-3D79127D4 · Oct 29
£1,933 GBP
$2,590 USD
View
11 more retailers have this diamond
Prices start from £308 GBPSave up to £1,625 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
£308 GBP