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Cushion|Lab Grown|GIA

1.50ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • GIA 7476845663

Certificate GIA 7476845663

Diamond specifications and retailer prices

From £367 GBP
As of November 6, 2026
Save £1,750 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,236 GBP at Steven Stone · As of November 7, 2026
View at Steven Stone

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7476845663. Listed at 13 retailers as of November 5, 2026, with a 477% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 7476845663
Dimensions7.88 × 6.10 × 4.09 mm
L/W Ratio1.29
Top View
7.88 mm6.10 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7476845663
Side View
Table 64.0%CrownGirdlePavilionCulet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
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: Nov 6
Current: £727 GBP|Low: £415 GBP|High: £3,736 GBP|Avg: £1,304 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Steven Stone
November 7, 2026
Retailer 4£415 GBP
Retailer 7£511 GBP
Retailer 8£610 GBP
Retailer 1£727 GBP
Retailer 9£783 GBP
Retailer 6£1,405 GBP
Retailer 3£1,457 GBP
Retailer 2£2,117 GBP
Steven Stone£2,236 GBP
Retailer 5£3,295 GBP

44 data points across 10 retailers

13 retailers£367 GBP to £2,117 GBP

A
Cheapest Retailer
-
£367 GBP
A
Retailer 2
-
£415 GBP
View
Final sale: no returns
B+
Retailer 3
-
£511 GBP
View
B+
Retailer 4
-
£564 GBP
View
B
Retailer 5
-
£610 GBP
View
B+
Retailer 6
-
£727 GBP
View
Retailer 7
-
£783 GBP
View
Price last confirmed 15 days ago
B
Retailer 8
-
£1,405 GBP
View
B
Retailer 9
-
£1,457 GBP
View
B
Retailer 10
-
£1,736 GBP
View
B
Retailer 11
-
£2,117 GBP
View
Most Expensive
Steven Stone
338512738 · Nov 7
£2,236 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £367 GBPSave up to £1,750 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
1.50ct Cushion
£367 GBP