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Cushion|Natural|GIA

1.23ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 2556358703

Certificate GIA 2556358703

Diamond specifications and retailer prices

From €1,433 EUR
As of November 6, 2026
Save €1,825 EUR (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €3,258 EUR at MOH London · As of November 7, 2026
View at MOH London

About this 1.23ct natural cushion diamond

This 1.23ct natural cushion sits in the classic one-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 2556358703. Listed at 20 retailers as of November 6, 2026, with prices from €1,433 to €3,258, a €1,825 spread on the same certified stone. MOH London lists it at €3,258. 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

1.23
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556358703
Dimensions6.14 × 6.13 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.14 mm6.13 mm1.23 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556358703
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

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: Nov 6
Current: €3,258 EUR|Low: €1,410 EUR|High: €3,381 EUR|Avg: €2,045 EUR|-3.6%
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
November 7, 2026
Retailer 18€1,433 EUR
Retailer 6€1,447 EUR
Retailer 5€1,563 EUR
Retailer 14€1,585 EUR
Retailer 11€1,659 EUR
Retailer 8€1,690 EUR
Retailer 9€1,728 EUR
Retailer 16€1,731 EUR
Retailer 10€1,738 EUR
Retailer 17€1,827 EUR
Retailer 4€1,830 EUR
Retailer 2€2,030 EUR
Retailer 7€2,048 EUR
Retailer 13€2,281 EUR
Retailer 12€2,537 EUR
Retailer 15€2,927 EUR
Retailer 3€3,117 EUR
MOH London€3,258 EUR

25 data points across 18 retailers

20 retailers€1,433 EUR to €3,258 EUR

A
Cheapest Retailer
-
€1,433 EUR
A
Retailer 2
-
€1,447 EUR
View
A
Retailer 3
-
€1,563 EUR
View
Final sale: no returns
A
Retailer 4
-
€1,585 EUR
View
A
Retailer 5
-
€1,659 EUR
View
A
Retailer 6
-
€1,690 EUR
View
A
Retailer 7
-
€1,728 EUR
View
A
Retailer 8
-
€1,731 EUR
View
A
Retailer 9
-
€1,738 EUR
View
A
Retailer 10
-
€1,827 EUR
View
A
Retailer 11
-
€1,830 EUR
View
A
Retailer 12
-
€2,030 EUR
View
A
Retailer 13
-
€2,048 EUR
View
B+
Retailer 14
-
€2,054 EUR
View
B+
Retailer 15
-
€2,281 EUR
View
Retailer 16
-
€2,414 EUR
View
Price last confirmed 32 days ago
B+
Retailer 17
-
€2,537 EUR
View
B+
Retailer 18
-
€2,927 EUR
View
B+
Retailer 19
-
€3,117 EUR
View
Most Expensive
B
MOH London
D0851533F · Nov 7
€3,258 EUR
£2,864 GBP
View
19 more retailers have this diamond
Prices start from €1,433 EURSave up to €1,825 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
1.23ct Cushion
€1,433 EUR