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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5543508231

Certificate GIA 5543508231

Diamond specifications and retailer prices

From €5,156 EUR
HK$45,000 HKD
As of October 31, 2026
Save €4,649 EUR (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €9,805 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 5543508231. Listed at 19 retailers as of October 28, 2026, with prices from €5,156 to €9,805, a €4,649 spread on the same certified stone. Queensmith lists it at €9,805. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543508231
Dimensions7.65 × 5.88 × 3.99 mm
L/W Ratio1.30
Top View
7.65 mm5.88 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5543508231
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 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 31
Current: €9,805 EUR|Low: €5,110 EUR|High: €9,884 EUR|Avg: €6,961 EUR|+1.6%
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€5,156 EUR
Retailer 2€5,471 EUR
Retailer 15€5,583 EUR
Retailer 7€6,067 EUR
Retailer 10€6,252 EUR
Retailer 5€6,275 EUR
Retailer 12€6,380 EUR
Retailer 11€6,410 EUR
Retailer 3€6,555 EUR
Retailer 6€6,945 EUR
Retailer 4€7,048 EUR
Retailer 9€7,429 EUR
Retailer 14€8,279 EUR
Retailer 13€9,526 EUR
Queensmith€9,805 EUR

22 data points across 15 retailers

19 retailers€5,156 EUR to €9,805 EUR

A
Cheapest Retailer
-
€5,156 EUR
HK$45,000 HKD
A
Retailer 2
-
€5,471 EUR
₹582,144 INR
View
B+
Retailer 3
-
€5,583 EUR
$6,237 USD
View
Retailer 4
-
€5,913 EUR
SGD 8,927 SGD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
€6,067 EUR
SGD 9,160 SGD
View
B+
Retailer 6
-
€6,252 EUR
$6,985 USD
View
B+
Retailer 7
-
€6,252 EUR
$6,985 USD
View
B+
Retailer 8
-
€6,275 EUR
$7,010 USD
View
Final sale: no returns
Retailer 9
-
€6,309 EUR
$7,049 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
€6,380 EUR
£5,613 GBP
View
B+
Retailer 11
-
€6,410 EUR
£5,639 GBP
View
Retailer 12
-
€6,555 EUR
A$11,266 AUD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
€6,922 EUR
A$11,898 AUD
View
B+
Retailer 14
-
€6,945 EUR
$7,759 USD
View
B+
Retailer 15
-
€7,048 EUR
$7,874 USD
View
B+
Retailer 16
-
€7,429 EUR
View
B+
Retailer 17
-
€8,279 EUR
ZAR 149,421 ZAR
View
B
Retailer 18
-
€9,526 EUR
£8,380 GBP
View
Most Expensive
B
Queensmith
5543508231 · Oct 28
€9,805 EUR
£8,625 GBP
View
18 more retailers have this diamond
Prices start from €5,156 EURSave up to €4,649 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
€5,156 EUR