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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 €2,100 EUR
HK$18,400 HKD
As of November 1, 2026
Save €2,524 EUR (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,624 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 1545301815. Listed at 21 retailers as of November 1, 2026, with prices from €2,100 to €4,624, a €2,524 spread on the same certified stone. MOH London lists it at €4,624. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €4,624 EUR|Low: €2,077 EUR|High: €4,680 EUR|Avg: €2,753 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 16€2,100 EUR
Retailer 5€2,119 EUR
Retailer 17€2,200 EUR
Retailer 9€2,243 EUR
Retailer 7€2,312 EUR
Retailer 6€2,456 EUR
Retailer 4€2,498 EUR
Retailer 8€2,504 EUR
Retailer 12€2,623 EUR
Retailer 3€2,630 EUR
Retailer 18€2,630 EUR
Retailer 2€2,684 EUR
Retailer 19€2,719 EUR
Retailer 14€2,889 EUR
Retailer 10€2,954 EUR
Retailer 13€3,236 EUR
Retailer 11€3,278 EUR
Retailer 15€3,399 EUR
MOH London€4,624 EUR

27 data points across 19 retailers

21 retailers€2,100 EUR to €4,624 EUR

A
Cheapest Retailer
-
€2,100 EUR
HK$18,400 HKD
A
Retailer 2
-
€2,119 EUR
$2,377 USD
View
A
Retailer 3
-
€2,200 EUR
$2,467 USD
View
A
Retailer 4
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€2,243 EUR
$2,516 USD
View
A
Retailer 5
-
€2,312 EUR
$2,593 USD
View
Final sale: no returns
A
Retailer 6
-
€2,319 EUR
A$4,001 AUD
View
A
Retailer 7
-
€2,456 EUR
$2,755 USD
View
A
Retailer 8
-
€2,498 EUR
$2,802 USD
View
A
Retailer 9
-
€2,504 EUR
$2,809 USD
View
A
Retailer 10
-
€2,623 EUR
£2,317 GBP
View
A
Retailer 11
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€2,630 EUR
$2,950 USD
View
A
Retailer 12
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€2,630 EUR
$2,950 USD
View
A
Retailer 13
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€2,684 EUR
$3,010 USD
View
A
Retailer 14
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€2,719 EUR
$3,050 USD
View
A
Retailer 15
-
€2,889 EUR
£2,552 GBP
View
Retailer 16
-
€2,954 EUR
A$5,097 AUD
View
Price last confirmed 25 days ago
Retailer 17
-
€3,210 EUR
$3,600 USD
View
Price last confirmed 10 days ago
A
Retailer 18
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€3,236 EUR
View
A
Retailer 19
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€3,278 EUR
$3,677 USD
View
A
Retailer 20
-
€3,399 EUR
ZAR 61,581 ZAR
View
Most Expensive
B+
MOH London
64A723D81 · Nov 2
€4,624 EUR
£4,084 GBP
View
20 more retailers have this diamond
Prices start from €2,100 EURSave up to €2,524 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
€2,100 EUR