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Cushion|Lab Grown|IGI

1.53ct F IF Cushion Lab Grown Diamond

EX • F/IF • IGI LG729517103

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

Certificate IGI LG729517103

Diamond specifications and retailer prices

From £462 GBP
As of November 6, 2026
Save £830 GBP (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,293 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 1.53ct lab-grown cushion diamond

This 1.53ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729517103 or 729517103. Listed at 9 retailers as of November 4, 2026, with prices from £462 to £1,293, a £830 spread on the same certified stone. Rare Carat lists it at £1,293. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.53
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729517103
Dimensions6.60 × 6.60 × 4.50 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
6.60 mm6.60 mm1.53 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729517103
Side View
Table 58.0%Crown 36.4°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 68.2%

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: Nov 6
Current: £1,293 GBP|Low: £435 GBP|High: £1,371 GBP|Avg: £768 GBP|-5.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 10£439 GBP
Retailer 6£462 GBP
Retailer 5£477 GBP
Retailer 2£500 GBP
Retailer 4£770 GBP
Retailer 7£891 GBP
Retailer 8£947 GBP
Retailer 9£1,116 GBP
Retailer 3£1,137 GBP
Rare Carat£1,293 GBP

45 data points across 10 retailers

9 retailers£462 GBP to £1,293 GBP

A
Cheapest Retailer
-
£462 GBP
A
Retailer 2
-
£477 GBP
View
A
Retailer 3
-
£500 GBP
View
A
Retailer 4
-
£770 GBP
View
A
Retailer 5
-
£891 GBP
View
A
Retailer 6
-
£947 GBP
View
Retailer 7
-
£1,116 GBP
View
Price last confirmed 33 days ago
B+
Retailer 8
-
£1,137 GBP
View
Most Expensive
B+
Rare Carat
SKD-52028 · Nov 4
£1,293 GBP
$1,730 USD
View
8 more retailers have this diamond
Prices start from £462 GBPSave up to £830 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
1.53ct Cushion
£462 GBP