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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1545301815

Certificate GIA 1545301815

Diamond specifications and retailer prices

From €2,108 EUR
HK$18,400 HKD
As of November 1, 2026
Save €2,534 EUR (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,643 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 1545301815. Listed at 21 retailers as of November 1, 2026, with prices from €2,108 to €4,643, a €2,534 spread on the same certified stone. MOH London lists it at €4,643. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle35.9°
OriginNatural
Grading LabGIA
CertificateGIA 1545301815
Dimensions6.47 × 6.44 × 4.41 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.47 mm6.44 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545301815
Side View
Table 64.0%Crown 38°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €4,643 EUR|Low: €2,085 EUR|High: €4,698 EUR|Avg: €2,760 EUR|-1.2%
MOH London
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 15€2,108 EUR
Retailer 5€2,128 EUR
Retailer 16€2,208 EUR
Retailer 9€2,252 EUR
Retailer 7€2,321 EUR
Retailer 6€2,466 EUR
Retailer 19€2,479 EUR
Retailer 4€2,508 EUR
Retailer 8€2,514 EUR
Retailer 2€2,634 EUR
Retailer 3€2,641 EUR
Retailer 17€2,641 EUR
Retailer 18€2,730 EUR
Retailer 13€2,900 EUR
Retailer 10€2,965 EUR
Retailer 12€3,249 EUR
Retailer 11€3,291 EUR
Retailer 14€3,412 EUR
MOH London€4,643 EUR

28 data points across 19 retailers

21 retailers€2,108 EUR to €4,643 EUR

A
Cheapest Retailer
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€2,108 EUR
HK$18,400 HKD
A
Retailer 2
-
€2,128 EUR
$2,377 USD
View
A
Retailer 3
-
€2,208 EUR
$2,467 USD
View
A
Retailer 4
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€2,252 EUR
$2,516 USD
View
A
Retailer 5
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€2,321 EUR
$2,593 USD
View
Final sale: no returns
A
Retailer 6
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€2,328 EUR
A$4,001 AUD
View
A
Retailer 7
-
€2,466 EUR
$2,755 USD
View
A
Retailer 8
-
€2,479 EUR
$2,770 USD
View
A
Retailer 9
-
€2,508 EUR
$2,802 USD
View
A
Retailer 10
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€2,514 EUR
$2,809 USD
View
A
Retailer 11
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€2,634 EUR
£2,317 GBP
View
A
Retailer 12
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€2,641 EUR
$2,950 USD
View
A
Retailer 13
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€2,641 EUR
$2,950 USD
View
A
Retailer 14
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€2,730 EUR
$3,050 USD
View
A
Retailer 15
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€2,900 EUR
£2,552 GBP
View
Retailer 16
-
€2,965 EUR
A$5,097 AUD
View
Price last confirmed 25 days ago
Retailer 17
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€3,222 EUR
$3,600 USD
View
Price last confirmed 10 days ago
A
Retailer 18
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€3,249 EUR
View
A
Retailer 19
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€3,291 EUR
$3,677 USD
View
A
Retailer 20
-
€3,412 EUR
ZAR 61,581 ZAR
View
Most Expensive
B+
MOH London
64A723D81 · Nov 1
€4,643 EUR
£4,084 GBP
View
20 more retailers have this diamond
Prices start from €2,108 EURSave up to €2,534 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
€2,108 EUR