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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1517368138

Certificate GIA 1517368138

Diamond specifications and retailer prices

From €5,072 EUR
$5,689 USD
As of November 2, 2026
Save €4,428 EUR (47%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: €9,500 EUR at MOH London · As of November 2, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1517368138. Listed at 28 retailers as of November 2, 2026, with prices from €5,072 to €9,500, a €4,428 spread on the same certified stone. MOH London lists it at €9,500. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle34.91°
OriginNatural
Grading LabGIA
CertificateGIA 1517368138
Dimensions7.47 × 5.79 × 4.04 mm
L/W Ratio1.29
Key to symbols
Crystal, Needle
Top View
7.47 mm5.79 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1517368138
Side View
Table 65.0%Crown 41.9°Girdle: THK-VTKPavilion 34.91°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €9,500 EUR|Low: €5,072 EUR|High: €9,614 EUR|Avg: €6,767 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10€5,072 EUR
Retailer 8€5,332 EUR
Retailer 9€5,437 EUR
Retailer 6€5,701 EUR
Retailer 4€6,427 EUR
Retailer 2€6,468 EUR
Retailer 7€6,572 EUR
Retailer 3€7,036 EUR
Retailer 5€8,375 EUR
MOH London€9,500 EUR

43 data points across 10 retailers

28 retailers€5,072 EUR to €9,500 EUR

B+
Cheapest Retailer
-
€5,072 EUR
$5,689 USD
B+
Retailer 2
-
€5,280 EUR
$5,922 USD
View
B+
Retailer 3
-
€5,295 EUR
A$9,137 AUD
View
Retailer 4
-
€5,332 EUR
$5,980 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
€5,385 EUR
$6,040 USD
View
B+
Retailer 6
-
€5,437 EUR
$6,098 USD
View
Final sale: no returns
B+
Retailer 7
-
€5,460 EUR
$6,124 USD
View
B+
Retailer 8
-
€5,662 EUR
CA$8,820 CAD
View
B+
Retailer 9
-
€5,701 EUR
$6,394 USD
View
B+
Retailer 10
-
€5,719 EUR
$6,415 USD
View
B+
Retailer 11
-
€5,801 EUR
$6,506 USD
View
B
Retailer 12
-
€6,073 EUR
$6,811 USD
View
B
Retailer 13
-
€6,291 EUR
$7,056 USD
View
B
Retailer 14
-
€6,397 EUR
$7,175 USD
View
B
Retailer 15
-
€6,427 EUR
£5,676 GBP
View
B
Retailer 16
-
€6,468 EUR
£5,712 GBP
View
B
Retailer 17
-
€6,516 EUR
$7,308 USD
View
Retailer 18
-
€6,572 EUR
A$11,340 AUD
View
Price last confirmed 11 days ago
B
Retailer 19
-
€6,669 EUR
A$11,508 AUD
View
B
Retailer 20
-
€6,847 EUR
$7,680 USD
View
B
Retailer 21
-
€6,847 EUR
$7,680 USD
View
Retailer 22
-
€6,871 EUR
$7,706 USD
View
Price last confirmed 7 days ago
B
Retailer 23
-
€7,036 EUR
View
B
Retailer 24
-
€7,079 EUR
$7,940 USD
View
B
Retailer 25
-
€7,504 EUR
$8,417 USD
View
Retailer 26
-
€7,511 EUR
$8,424 USD
View
Price last confirmed 10 days ago
B
Retailer 27
-
€8,375 EUR
ZAR 151,755 ZAR
View
Most Expensive
B
MOH London
FF8EED978 · Nov 2
€9,500 EUR
£8,390 GBP
View
27 more retailers have this diamond
Prices start from €5,072 EURSave up to €4,428 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.

B+
1.50ct Cushion
€5,072 EUR