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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1232947260

Certificate GIA 1232947260

Diamond specifications and retailer prices

From €2,979 EUR
HK$26,100 HKD
As of November 1, 2026
Save €3,481 EUR (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €6,460 EUR at MOH London · As of November 1, 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 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 1232947260. Listed at 9 retailers as of November 1, 2026, with prices from €2,979 to €6,460, a €3,481 spread on the same certified stone. MOH London lists it at €6,460. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.31°
OriginNatural
Grading LabGIA
CertificateGIA 1232947260
Dimensions7.81 × 5.96 × 4.04 mm
L/W Ratio1.31
Key to symbols
Feather, Needle, Pinpoint, Cloud
Top View
7.81 mm5.96 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232947260
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 35.31°Culet: NoneDepth 67.8%

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 1
Current: €6,460 EUR|Low: €2,979 EUR|High: €7,094 EUR|Avg: €4,351 EUR|-8.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5€2,979 EUR
Retailer 6€3,627 EUR
Retailer 2€3,848 EUR
Retailer 8€3,891 EUR
Retailer 4€4,212 EUR
Retailer 7€4,377 EUR
Retailer 3€4,646 EUR
MOH London€6,460 EUR

33 data points across 8 retailers

9 retailers€2,979 EUR to €6,460 EUR

A
Cheapest Retailer
-
€2,979 EUR
HK$26,100 HKD
A
Retailer 2
-
€3,627 EUR
$4,068 USD
View
A
Retailer 3
-
€3,848 EUR
£3,399 GBP
View
A
Retailer 4
-
€3,891 EUR
SGD 5,898 SGD
View
B+
Retailer 5
-
€4,212 EUR
View
B+
Retailer 6
-
€4,377 EUR
$4,909 USD
View
B+
Retailer 7
-
€4,432 EUR
A$7,648 AUD
View
B+
Retailer 8
-
€4,646 EUR
View
Most Expensive
B
MOH London
8D2B6642B · Nov 1
€6,460 EUR
£5,705 GBP
View
8 more retailers have this diamond
Prices start from €2,979 EURSave up to €3,481 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
€2,979 EUR