Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 6445506666

Certificate GIA 6445506666

Diamond specifications and retailer prices

From €2,033 EUR
As of November 4, 2026
Save €2,264 EUR (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €4,297 EUR at MOH London · As of November 4, 2026
View at MOH London

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6445506666. Listed at 15 retailers as of November 4, 2026, with prices from €2,033 to €4,297, a €2,264 spread on the same certified stone. MOH London lists it at €4,297. 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
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6445506666
Dimensions6.60 × 5.95 × 4.24 mm
L/W Ratio1.11
Top View
6.60 mm5.95 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445506666
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €4,297 EUR|Low: €2,033 EUR|High: €4,355 EUR|Avg: €2,761 EUR|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 6€2,033 EUR
Retailer 7€2,202 EUR
Retailer 8€2,334 EUR
Retailer 3€2,476 EUR
Retailer 2€2,734 EUR
Retailer 4€2,970 EUR
Retailer 5€3,145 EUR
MOH London€4,297 EUR

38 data points across 8 retailers

15 retailers€2,033 EUR to €4,297 EUR

B+
Cheapest Retailer
-
€2,033 EUR
B+
Retailer 2
-
€2,091 EUR
View
B+
Retailer 3
-
€2,202 EUR
View
B+
Retailer 4
-
€2,306 EUR
View
Retailer 5
-
€2,334 EUR
View
Price last confirmed 9 days ago
B+
Retailer 6
-
€2,369 EUR
View
B+
Retailer 7
-
€2,378 EUR
View
B+
Retailer 8
-
€2,476 EUR
View
B+
Retailer 9
-
€2,516 EUR
View
B+
Retailer 10
-
€2,535 EUR
View
B+
Retailer 11
-
€2,734 EUR
View
B+
Retailer 12
-
€2,970 EUR
View
Retailer 13
-
€2,992 EUR
View
Price last confirmed 15 days ago
B+
Retailer 14
-
€3,145 EUR
View
Most Expensive
B
MOH London
6ED3F1AE5 · Nov 4
€4,297 EUR
£3,778 GBP
View
14 more retailers have this diamond
Prices start from €2,033 EURSave up to €2,264 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.

B+
1.51ct Cushion
€2,033 EUR