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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 €5,092 EUR
$5,689 USD
As of October 31, 2026
Save €4,445 EUR (47%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: €9,537 EUR at MOH London · As of November 1, 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 October 31, 2026, with prices from €5,092 to €9,537, a €4,445 spread on the same certified stone. MOH London lists it at €9,537. 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
Color
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: Oct 31
Current: €9,537 EUR|Low: €5,092 EUR|High: €9,652 EUR|Avg: €6,792 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€5,092 EUR
Retailer 8€5,353 EUR
Retailer 9€5,458 EUR
Retailer 6€5,723 EUR
Retailer 2€6,452 EUR
Retailer 3€6,494 EUR
Retailer 7€6,598 EUR
Retailer 5€7,042 EUR
Retailer 4€8,408 EUR
MOH London€9,537 EUR

44 data points across 10 retailers

28 retailers€5,092 EUR to €9,537 EUR

B+
Cheapest Retailer
-
€5,092 EUR
$5,689 USD
B+
Retailer 2
-
€5,301 EUR
$5,922 USD
View
B+
Retailer 3
-
€5,316 EUR
A$9,137 AUD
View
Retailer 4
-
€5,353 EUR
$5,980 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
€5,406 EUR
$6,040 USD
View
B+
Retailer 6
-
€5,458 EUR
$6,098 USD
View
Final sale: no returns
B+
Retailer 7
-
€5,481 EUR
$6,124 USD
View
B+
Retailer 8
-
€5,684 EUR
CA$8,820 CAD
View
B+
Retailer 9
-
€5,723 EUR
$6,394 USD
View
B+
Retailer 10
-
€5,742 EUR
$6,415 USD
View
B+
Retailer 11
-
€5,823 EUR
$6,506 USD
View
B
Retailer 12
-
€6,097 EUR
$6,811 USD
View
B
Retailer 13
-
€6,316 EUR
$7,056 USD
View
B
Retailer 14
-
€6,422 EUR
$7,175 USD
View
B
Retailer 15
-
€6,452 EUR
£5,676 GBP
View
B
Retailer 16
-
€6,494 EUR
£5,713 GBP
View
B
Retailer 17
-
€6,541 EUR
$7,308 USD
View
Retailer 18
-
€6,598 EUR
A$11,340 AUD
View
Price last confirmed 11 days ago
B
Retailer 19
-
€6,695 EUR
A$11,508 AUD
View
B
Retailer 20
-
€6,874 EUR
$7,680 USD
View
B
Retailer 21
-
€6,874 EUR
$7,680 USD
View
B
Retailer 22
-
€6,898 EUR
$7,706 USD
View
B
Retailer 23
-
€7,042 EUR
View
B
Retailer 24
-
€7,107 EUR
$7,940 USD
View
B
Retailer 25
-
€7,534 EUR
$8,417 USD
View
Retailer 26
-
€7,540 EUR
$8,424 USD
View
Price last confirmed 10 days ago
B
Retailer 27
-
€8,408 EUR
ZAR 151,755 ZAR
View
Most Expensive
B
MOH London
FF8EED978 · Nov 1
€9,537 EUR
£8,390 GBP
View
27 more retailers have this diamond
Prices start from €5,092 EURSave up to €4,445 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
€5,092 EUR