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Cushion|Natural|GIA

1.23ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6291665728

Certificate GIA 6291665728

Diamond specifications and retailer prices

From €3,457 EUR
$3,862 USD
As of October 30, 2026
Save €2,800 EUR (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €6,257 EUR at MOH London · As of November 1, 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 6291665728. Listed at 9 retailers as of October 30, 2026, with prices from €3,457 to €6,257, a €2,800 spread on the same certified stone. MOH London lists it at €6,257. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6291665728
Dimensions6.13 × 5.85 × 3.94 mm
L/W Ratio1.05
Top View
6.13 mm5.85 mm1.23 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6291665728
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €6,257 EUR|Low: €3,437 EUR|High: €6,489 EUR|Avg: €4,311 EUR|-2.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9€3,457 EUR
Retailer 5€3,509 EUR
Retailer 7€3,550 EUR
Retailer 8€3,929 EUR
Retailer 4€4,174 EUR
Retailer 6€4,190 EUR
Retailer 3€4,445 EUR
Retailer 2€4,829 EUR
MOH London€6,257 EUR

42 data points across 9 retailers

9 retailers€3,457 EUR to €6,257 EUR

B
Cheapest Retailer
-
€3,457 EUR
$3,862 USD
B
Retailer 2
-
€3,509 EUR
$3,920 USD
View
B
Retailer 3
-
€3,550 EUR
$3,967 USD
View
B
Retailer 4
-
€3,929 EUR
$4,389 USD
View
B
Retailer 5
-
€4,174 EUR
£3,672 GBP
View
Retailer 6
-
€4,190 EUR
A$7,202 AUD
View
Price last confirmed 23 days ago
B
Retailer 7
-
€4,445 EUR
View
B
Retailer 8
-
€4,829 EUR
ZAR 87,154 ZAR
View
Most Expensive
B
MOH London
1B5FC5FE1 · Nov 1
€6,257 EUR
£5,504 GBP
View
8 more retailers have this diamond
Prices start from €3,457 EURSave up to €2,800 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
1.23ct Cushion
€3,457 EUR