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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 2557664390

Certificate GIA 2557664390

Diamond specifications and retailer prices

From €4,205 EUR
HK$36,700 HKD
As of October 31, 2026
Save €4,617 EUR (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €8,821 EUR at Queensmith · As of October 28, 2026
View at Queensmith

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557664390. Listed at 19 retailers as of October 28, 2026, with prices from €4,205 to €8,821, a €4,617 spread on the same certified stone. Queensmith lists it at €8,821. 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
OriginNatural
Grading LabGIA
CertificateGIA 2557664390
Dimensions7.39 × 5.70 × 3.89 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Cloud, Needle
Top View
7.39 mm5.70 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557664390
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.4%

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 31
Current: €8,821 EUR|Low: €4,159 EUR|High: €8,889 EUR|Avg: €5,822 EUR|+1.9%
Queensmith
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
October 31, 2026
Retailer 8€4,205 EUR
Retailer 2€4,485 EUR
Retailer 15€4,685 EUR
Retailer 14€4,788 EUR
Retailer 6€4,947 EUR
Retailer 4€5,166 EUR
Retailer 11€5,253 EUR
Retailer 10€5,370 EUR
Retailer 7€5,570 EUR
Retailer 5€5,738 EUR
Retailer 3€5,851 EUR
Retailer 9€6,117 EUR
Retailer 13€6,816 EUR
Retailer 12€8,290 EUR
Queensmith€8,821 EUR

23 data points across 15 retailers

19 retailers€4,205 EUR to €8,821 EUR

A
Cheapest Retailer
-
€4,205 EUR
HK$36,700 HKD
A
Retailer 2
-
€4,485 EUR
₹477,189 INR
View
A
Retailer 3
-
€4,685 EUR
$5,234 USD
View
A
Retailer 4
-
€4,788 EUR
SGD 7,229 SGD
View
A
Retailer 5
-
€4,947 EUR
SGD 7,468 SGD
View
A
Retailer 6
-
€5,143 EUR
$5,746 USD
View
A
Retailer 7
-
€5,147 EUR
$5,750 USD
View
A
Retailer 8
-
€5,166 EUR
$5,772 USD
View
Final sale: no returns
A
Retailer 9
-
€5,253 EUR
£4,621 GBP
View
A
Retailer 10
-
€5,370 EUR
£4,724 GBP
View
Retailer 11
-
€5,570 EUR
A$9,573 AUD
View
Price last confirmed 20 days ago
Retailer 12
-
€5,635 EUR
$6,295 USD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
€5,712 EUR
A$9,818 AUD
View
B+
Retailer 14
-
€5,738 EUR
$6,411 USD
View
B+
Retailer 15
-
€5,851 EUR
$6,537 USD
View
B+
Retailer 16
-
€6,117 EUR
View
B+
Retailer 17
-
€6,816 EUR
ZAR 123,020 ZAR
View
B
Retailer 18
-
€8,290 EUR
£7,293 GBP
View
Most Expensive
B
Queensmith
2557664390 · Oct 28
€8,821 EUR
£7,760 GBP
View
18 more retailers have this diamond
Prices start from €4,205 EURSave up to €4,617 EUR

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
€4,205 EUR