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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 2557249050

Certificate GIA 2557249050

Diamond specifications and retailer prices

From €1,891 EUR
As of November 6, 2026
Save €297 EUR (14%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €2,188 EUR at Michael Trio · As of November 6, 2026
View at Michael Trio

About this 1.51ct natural cushion diamond

This 1.51ct 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 2557249050. Listed at 3 retailers as of November 6, 2026, with prices from €1,891 to €2,188, a €297 spread on the same certified stone. Michael Trio lists it at €2,188. 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

1.51
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557249050
Dimensions7.24 × 6.05 × 4.04 mm
L/W Ratio1.20
Top View
7.24 mm6.05 mm1.51 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557249050
Side View
Table 65.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €2,188 EUR|Low: €1,891 EUR|High: €2,434 EUR|Avg: €2,104 EUR|-10.1%
Michael Trio
Retailer 2
Retailer 3
October 17, 2026
Retailer 2€1,891 EUR
Retailer 3€1,922 EUR
Michael Trio€2,188 EUR

7 data points across 3 retailers

3 retailers€1,891 EUR to €2,188 EUR

A
Cheapest Retailer
-
€1,891 EUR
A
Retailer 2
-
€1,922 EUR
View
Most Expensive
A
Michael Trio
2070962538 · Nov 6
€2,188 EUR
SGD 3,301 SGD
View
2 more retailers have this diamond
Prices start from €1,891 EURSave up to €297 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
1.51ct Cushion
€1,891 EUR