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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1236988663

Certificate GIA 1236988663

Diamond specifications and retailer prices

From €1,994 EUR
$2,228 USD
As of October 31, 2026
Save €2,795 EUR (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €4,789 EUR at MOH London · As of October 29, 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 J 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 1236988663. Listed at 20 retailers as of October 29, 2026, with prices from €1,994 to €4,789, a €2,795 spread on the same certified stone. MOH London lists it at €4,789. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236988663
Dimensions7.23 × 5.78 × 3.97 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
7.23 mm5.78 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236988663
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €4,789 EUR|Low: €1,994 EUR|High: €4,976 EUR|Avg: €2,877 EUR|-3.7%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 11€1,994 EUR
Retailer 13€2,074 EUR
Retailer 2€2,196 EUR
Retailer 4€2,239 EUR
Retailer 3€2,259 EUR
Retailer 15€2,444 EUR
Retailer 7€2,444 EUR
Retailer 9€2,543 EUR
Retailer 8€2,596 EUR
Retailer 18€2,650 EUR
Retailer 17€2,654 EUR
Retailer 5€2,722 EUR
Retailer 16€2,825 EUR
Retailer 10€3,149 EUR
Retailer 14€3,219 EUR
Retailer 12€3,380 EUR
Retailer 6€4,353 EUR
MOH London€4,789 EUR

23 data points across 18 retailers

20 retailers€1,994 EUR to €4,789 EUR

A
Cheapest Retailer
-
€1,994 EUR
$2,228 USD
A
Retailer 2
-
€2,074 EUR
HK$18,100 HKD
View
A
Retailer 3
-
€2,196 EUR
$2,453 USD
View
Final sale: no returns
A
Retailer 4
-
€2,239 EUR
$2,502 USD
View
A
Retailer 5
-
€2,259 EUR
$2,524 USD
View
A
Retailer 6
-
€2,444 EUR
$2,730 USD
View
A
Retailer 7
-
€2,444 EUR
$2,731 USD
View
A
Retailer 8
-
€2,522 EUR
A$4,335 AUD
View
A
Retailer 9
-
€2,543 EUR
$2,841 USD
View
A
Retailer 10
-
€2,596 EUR
$2,900 USD
View
A
Retailer 11
-
€2,650 EUR
£2,331 GBP
View
A
Retailer 12
-
€2,654 EUR
£2,334 GBP
View
Retailer 13
-
€2,722 EUR
$3,041 USD
View
Price last confirmed 13 days ago
A
Retailer 14
-
€2,825 EUR
$3,156 USD
View
B+
Retailer 15
-
€3,100 EUR
A$5,328 AUD
View
Retailer 16
-
€3,149 EUR
A$5,413 AUD
View
Price last confirmed 25 days ago
B+
Retailer 17
-
€3,219 EUR
View
B+
Retailer 18
-
€3,380 EUR
ZAR 61,001 ZAR
View
Retailer 19
-
€4,353 EUR
$4,863 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
F1C44731E · Oct 29
€4,789 EUR
£4,213 GBP
View
19 more retailers have this diamond
Prices start from €1,994 EURSave up to €2,795 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
€1,994 EUR