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Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1425646526

Certificate GIA 1425646526

Diamond specifications and retailer prices

From €3,149 EUR
$3,532 USD
As of November 2, 2026
Save €1,389 EUR (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €4,538 EUR at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1425646526. Listed at 11 retailers as of November 2, 2026, with prices from €3,149 to €4,538, a €1,389 spread on the same certified stone. 77 Diamonds lists it at €4,538. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1425646526
Dimensions6.95 × 6.28 × 4.26 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.95 mm6.28 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1425646526
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

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 2
Current: €4,538 EUR|Low: €3,109 EUR|High: €4,555 EUR|Avg: €3,994 EUR|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5€3,149 EUR
Retailer 3€3,210 EUR
Retailer 4€3,956 EUR
Retailer 7€4,199 EUR
Retailer 8€4,199 EUR
Retailer 6€4,342 EUR
Retailer 2€4,390 EUR
77 Diamonds€4,538 EUR

40 data points across 8 retailers

11 retailers€3,149 EUR to €4,538 EUR

A
Cheapest Retailer
-
€3,149 EUR
$3,532 USD
A
Retailer 2
-
€3,215 EUR
$3,606 USD
View
A
Retailer 3
-
€3,249 EUR
$3,644 USD
View
A
Retailer 4
-
€3,288 EUR
$3,688 USD
View
A
Retailer 5
-
€3,408 EUR
A$5,882 AUD
View
B+
Retailer 6
-
€3,956 EUR
$4,437 USD
View
B+
Retailer 7
-
€4,199 EUR
$4,710 USD
View
B+
Retailer 8
-
€4,199 EUR
$4,710 USD
View
B+
Retailer 9
-
€4,342 EUR
$4,870 USD
View
B+
Retailer 10
-
€4,390 EUR
View
Most Expensive
B+
77 Diamonds
CUSMBKG4TCX2Z · Nov 2
€4,538 EUR
£4,008 GBP
View
10 more retailers have this diamond
Prices start from €3,149 EURSave up to €1,389 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
€3,149 EUR