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Cushion|Lab Grown|IGI

1.07ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG678583389

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG678583389

Diamond specifications and retailer prices

From £257 GBP
As of November 6, 2026
Save £1,065 GBP (81%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,322 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.07ct lab-grown cushion diamond

This 1.07ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678583389 or 678583389. Listed at 5 retailers as of November 6, 2026, with prices from £257 to £1,322, a £1,065 spread on the same certified stone. Do Amore Diamonds lists it at £1,322. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.07
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678583389
Dimensions7.16 × 5.39 × 3.62 mm
L/W Ratio1.33
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
7.16 mm5.39 mm1.07 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG678583389
Side View
Table 63.0%Crown 34.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 67.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,322 GBP|Low: £256 GBP|High: £1,322 GBP|Avg: £568 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2£257 GBP
Retailer 7£267 GBP
Retailer 4£337 GBP
Retailer 5£373 GBP
Retailer 6£415 GBP
Retailer 8£670 GBP
Retailer 3£865 GBP
Do Amore Diamonds£1,322 GBP

35 data points across 8 retailers

5 retailers£257 GBP to £1,322 GBP

A
Cheapest Retailer
-
£257 GBP
B+
Retailer 2
-
£337 GBP
View
B+
Retailer 3
-
£373 GBP
View
B
Retailer 4
-
£865 GBP
View
Most Expensive
B
Do Amore Diamonds
7-1675433 · Nov 6
£1,322 GBP
$1,770 USD
View
4 more retailers have this diamond
Prices start from £257 GBPSave up to £1,065 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
1.07ct Cushion
£257 GBP