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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 6435484641

Certificate GIA 6435484641

Diamond specifications and retailer prices

From €1,777 EUR
As of November 6, 2026
Save €2,204 EUR (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €3,981 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 6435484641. Listed at 23 retailers as of November 4, 2026, with prices from €1,777 to €3,981, a €2,204 spread on the same certified stone. MOH London lists it at €3,981. 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

1.30
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle57.65°
OriginNatural
Grading LabGIA
CertificateGIA 6435484641
Dimensions6.24 × 5.92 × 4.14 mm
L/W Ratio1.05
Top View
6.24 mm5.92 mm1.30 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6435484641
Side View
Table 64.0%Crown 38.5°Girdle: STK-VTKPavilion 57.65°Culet: NoneDepth 69.9%

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: €3,981 EUR|Low: €1,777 EUR|High: €4,035 EUR|Avg: €2,465 EUR|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10€1,777 EUR
Retailer 4€1,778 EUR
Retailer 9€2,034 EUR
Retailer 5€2,210 EUR
Retailer 3€2,257 EUR
Retailer 11€2,289 EUR
Retailer 2€2,410 EUR
Retailer 7€2,475 EUR
Retailer 8€2,780 EUR
Retailer 6€2,828 EUR
MOH London€3,981 EUR

27 data points across 11 retailers

23 retailers€1,777 EUR to €3,981 EUR

A
Cheapest Retailer
-
€1,777 EUR
A
Retailer 2
-
€1,778 EUR
View
A
Retailer 3
-
€2,017 EUR
View
A
Retailer 4
-
€2,034 EUR
View
A
Retailer 5
-
€2,045 EUR
View
A
Retailer 6
-
€2,058 EUR
View
A
Retailer 7
-
€2,102 EUR
View
Final sale: no returns
A
Retailer 8
-
€2,210 EUR
View
A
Retailer 9
-
€2,257 EUR
View
Retailer 10
-
€2,279 EUR
View
Price last confirmed 9 days ago
A
Retailer 11
-
€2,289 EUR
View
A
Retailer 12
-
€2,404 EUR
View
A
Retailer 13
-
€2,410 EUR
View
A
Retailer 14
-
€2,467 EUR
View
A
Retailer 15
-
€2,475 EUR
View
A
Retailer 16
-
€2,481 EUR
View
A
Retailer 17
-
€2,518 EUR
View
Retailer 18
-
€2,553 EUR
View
Price last confirmed 31 days ago
B+
Retailer 19
-
€2,780 EUR
View
B+
Retailer 20
-
€2,828 EUR
View
B
Retailer 21
-
€3,349 EUR
View
B
Retailer 22
-
€3,442 EUR
View
Most Expensive
B
MOH London
C75FA4012 · Nov 4
€3,981 EUR
£3,500 GBP
View
22 more retailers have this diamond
Prices start from €1,777 EURSave up to €2,204 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
1.30ct Cushion
€1,777 EUR