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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 6541578989

Certificate GIA 6541578989

Diamond specifications and retailer prices

From £3,028 GBP
HK$31,500 HKD
As of October 29, 2026
Save £3,423 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,450 GBP at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541578989. Listed at 21 retailers as of October 23, 2026, with prices from £3,028 to £6,450, a £3,423 spread on the same certified stone. Wholesale Diamonds Direct lists it at £6,450. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.9°
OriginNatural
Grading LabGIA
CertificateGIA 6541578989
Dimensions7.14 × 6.20 × 4.21 mm
L/W Ratio1.15
Top View
7.14 mm6.20 mm1.50 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541578989
Side View
Table 65.0%CrownGirdle: THK-VTKPavilion 36.9°Culet: NDepth 67.9%

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: Oct 29
Current: £3,890 GBP|Low: £3,028 GBP|High: £6,733 GBP|Avg: £4,032 GBP|-2.9%
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
Retailer 17
Retailer 18
Wholesale Diamonds Direct
October 29, 2026
Retailer 3£3,028 GBP
Retailer 15£3,069 GBP
Retailer 4£3,270 GBP
Retailer 18£3,276 GBP
Retailer 11£3,342 GBP
Retailer 5£3,436 GBP
Retailer 2£3,458 GBP
Retailer 12£3,526 GBP
Retailer 7£3,636 GBP
Retailer 6£3,650 GBP
Retailer 17£3,666 GBP
Retailer 13£3,749 GBP
Retailer 1£3,890 GBP
Retailer 10£4,139 GBP
Retailer 9£4,343 GBP
Retailer 14£4,418 GBP
Retailer 16£4,718 GBP
Retailer 8£6,260 GBP
Wholesale Diamonds Direct£6,450 GBP

22 data points across 19 retailers

21 retailers£3,028 GBP to £6,450 GBP

A
Cheapest Retailer
-
£3,028 GBP
HK$31,500 HKD
A
Retailer 2
-
£3,069 GBP
$4,087 USD
View
A
Retailer 3
-
£3,270 GBP
$4,354 USD
View
Final sale: no returns
A
Retailer 4
-
£3,276 GBP
$4,363 USD
View
A
Retailer 5
-
£3,342 GBP
$4,450 USD
View
A
Retailer 6
-
£3,436 GBP
$4,576 USD
View
A
Retailer 7
-
£3,458 GBP
$4,605 USD
View
A
Retailer 8
-
£3,526 GBP
€4,472 EUR
View
A
Retailer 9
-
£3,636 GBP
$4,842 USD
View
A
Retailer 10
-
£3,650 GBP
$4,860 USD
View
A
Retailer 11
-
£3,666 GBP
$4,882 USD
View
Retailer 12
-
£3,749 GBP
$4,992 USD
View
A
Retailer 13
-
£3,749 GBP
$4,992 USD
View
Price last confirmed 8 days ago
A
Retailer 14
-
£3,890 GBP
View
A
Retailer 15
-
£4,139 GBP
A$8,480 AUD
View
Price last confirmed 19 days ago
B+
Retailer 16
-
£4,250 GBP
A$8,708 AUD
View
A
Retailer 17
-
£4,343 GBP
SGD 7,816 SGD
View
A
Retailer 18
-
£4,418 GBP
€5,603 EUR
View
B+
Retailer 19
-
£4,718 GBP
ZAR 101,506 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 20
-
£6,260 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
425790474 · Oct 23
£6,450 GBP
$8,590 USD
View
20 more retailers have this diamond
Prices start from £3,028 GBPSave up to £3,423 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
£3,028 GBP