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Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1543520312

Certificate GIA 1543520312

Diamond specifications and retailer prices

From €1,685 EUR
As of November 6, 2026
Save €2,170 EUR (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €3,855 EUR at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543520312. Listed at 14 retailers as of November 4, 2026, with prices from €1,685 to €3,855, a €2,170 spread on the same certified stone. MOH London lists it at €3,855. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 1543520312
Dimensions7.45 × 6.07 × 4.17 mm
L/W Ratio1.23
Girdle conditionFaceted
Top View
7.45 mm6.07 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543520312
Side View
Table 64.0%CrownGirdle: MED-THKPavilion 37.5°Culet: NoneDepth 68.8%

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 6
Current: €3,855 EUR|Low: €1,662 EUR|High: €4,301 EUR|Avg: €2,683 EUR|-10.4%
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
November 6, 2026
Retailer 13€1,685 EUR
Retailer 10€2,036 EUR
Retailer 11€2,138 EUR
Retailer 5€2,194 EUR
Retailer 9€2,334 EUR
Retailer 3€2,344 EUR
Retailer 6€2,348 EUR
Retailer 4€2,660 EUR
Retailer 7€2,692 EUR
Retailer 2€2,739 EUR
Retailer 8€2,809 EUR
Retailer 12€3,601 EUR
MOH London€3,855 EUR

33 data points across 13 retailers

14 retailers€1,685 EUR to €3,855 EUR

A
Cheapest Retailer
-
€1,685 EUR
A
Retailer 2
-
€2,036 EUR
View
Final sale: no returns
A
Retailer 3
-
€2,138 EUR
View
A
Retailer 4
-
€2,194 EUR
View
A
Retailer 5
-
€2,334 EUR
View
A
Retailer 6
-
€2,344 EUR
View
A
Retailer 7
-
€2,348 EUR
View
A
Retailer 8
-
€2,560 EUR
View
A
Retailer 9
-
€2,660 EUR
View
A
Retailer 10
-
€2,692 EUR
View
A
Retailer 11
-
€2,739 EUR
View
A
Retailer 12
-
€2,809 EUR
View
B+
Retailer 13
-
€3,601 EUR
View
Most Expensive
B+
MOH London
53B5DEFF3 · Nov 4
€3,855 EUR
£3,389 GBP
View
13 more retailers have this diamond
Prices start from €1,685 EURSave up to €2,170 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
€1,685 EUR