CaratHunter
Plans
Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 2557438429

Certificate GIA 2557438429

Diamond specifications and retailer prices

From €4,365 EUR
HK$38,100 HKD
As of October 31, 2026
Save €4,638 EUR (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €9,003 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 2557438429. Listed at 19 retailers as of October 28, 2026, with prices from €4,365 to €9,003, a €4,638 spread on the same certified stone. Queensmith lists it at €9,003. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557438429
Dimensions7.69 × 5.74 × 3.86 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.69 mm5.74 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557438429
Side View
Table 63.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.3%

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: €9,003 EUR|Low: €4,331 EUR|High: €9,077 EUR|Avg: €6,091 EUR|+1.8%
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
Retailer 16
October 31, 2026
Retailer 10€4,365 EUR
Retailer 9€4,659 EUR
Retailer 14€4,868 EUR
Retailer 4€5,075 EUR
Retailer 7€5,144 EUR
Retailer 3€5,374 EUR
Retailer 16€5,375 EUR
Retailer 12€5,406 EUR
Retailer 13€5,585 EUR
Retailer 8€5,716 EUR
Retailer 5€5,729 EUR
Retailer 6€5,964 EUR
Retailer 11€6,362 EUR
Retailer 2€7,154 EUR
Retailer 15€8,625 EUR
Queensmith€9,003 EUR

26 data points across 16 retailers

19 retailers€4,365 EUR to €9,003 EUR

A
Cheapest Retailer
-
€4,365 EUR
HK$38,100 HKD
A
Retailer 2
-
€4,659 EUR
₹495,711 INR
View
A
Retailer 3
-
€4,868 EUR
$5,439 USD
View
Retailer 4
-
€5,013 EUR
SGD 7,568 SGD
View
Price last confirmed 17 days ago
A
Retailer 5
-
€5,075 EUR
$5,670 USD
View
A
Retailer 6
-
€5,144 EUR
SGD 7,766 SGD
View
A
Retailer 7
-
€5,348 EUR
$5,975 USD
View
A
Retailer 8
-
€5,374 EUR
$6,004 USD
View
Final sale: no returns
A
Retailer 9
-
€5,375 EUR
$6,005 USD
View
A
Retailer 10
-
€5,406 EUR
$6,040 USD
View
A
Retailer 11
-
€5,585 EUR
£4,913 GBP
View
B+
Retailer 12
-
€5,677 EUR
A$9,758 AUD
View
Retailer 13
-
€5,716 EUR
A$9,825 AUD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
€5,729 EUR
$6,400 USD
View
B+
Retailer 15
-
€5,964 EUR
$6,663 USD
View
B+
Retailer 16
-
€6,362 EUR
View
B+
Retailer 17
-
€7,154 EUR
ZAR 129,116 ZAR
View
B+
Retailer 18
-
€8,625 EUR
£7,587 GBP
View
Most Expensive
B
Queensmith
2557438429 · Oct 28
€9,003 EUR
£7,920 GBP
View
18 more retailers have this diamond
Prices start from €4,365 EURSave up to €4,638 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
€4,365 EUR