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Cushion|Natural|GIA

1.00ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 1398673309

Certificate GIA 1398673309

Diamond specifications and retailer prices

From €1,461 EUR
HK$12,800 HKD
As of November 1, 2026
Save €1,984 EUR (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,444 EUR at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded H 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 1398673309. Listed at 15 retailers as of November 1, 2026, with prices from €1,461 to €3,444, a €1,984 spread on the same certified stone. MOH London lists it at €3,444. 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

1.00
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1398673309
Dimensions5.85 × 5.77 × 3.89 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle, Natural
Top View
5.85 mm5.77 mm1.00 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1398673309
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 67.4%

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: €3,444 EUR|Low: €1,449 EUR|High: €3,908 EUR|Avg: €2,252 EUR|-0.9%
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
November 2, 2026
Retailer 8€1,461 EUR
Retailer 3€1,724 EUR
Retailer 11€1,814 EUR
Retailer 12€1,865 EUR
Retailer 2€1,918 EUR
Retailer 13€1,979 EUR
Retailer 4€2,060 EUR
Retailer 6€2,090 EUR
Retailer 7€2,140 EUR
Retailer 9€2,417 EUR
Retailer 14€2,418 EUR
Retailer 10€2,456 EUR
MOH London€3,444 EUR
Retailer 5€3,908 EUR

27 data points across 14 retailers

15 retailers€1,461 EUR to €3,444 EUR

A
Cheapest Retailer
-
€1,461 EUR
HK$12,800 HKD
B+
Retailer 2
-
€1,724 EUR
$1,934 USD
View
B+
Retailer 3
-
€1,776 EUR
$1,992 USD
View
B+
Retailer 4
-
€1,814 EUR
$2,035 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,865 EUR
$2,092 USD
View
B+
Retailer 6
-
€1,918 EUR
£1,694 GBP
View
B+
Retailer 7
-
€1,979 EUR
$2,220 USD
View
B+
Retailer 8
-
€2,031 EUR
SGD 3,079 SGD
View
B+
Retailer 9
-
€2,060 EUR
$2,310 USD
View
B+
Retailer 10
-
€2,090 EUR
$2,344 USD
View
B+
Retailer 11
-
€2,140 EUR
£1,890 GBP
View
B+
Retailer 12
-
€2,417 EUR
ZAR 43,791 ZAR
View
Retailer 13
-
€2,418 EUR
A$4,172 AUD
View
Price last confirmed 27 days ago
B+
Retailer 14
-
€2,456 EUR
View
Most Expensive
B
MOH London
A64957593 · Nov 2
€3,444 EUR
£3,042 GBP
View
14 more retailers have this diamond
Prices start from €1,461 EURSave up to €1,984 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
1.00ct Cushion
€1,461 EUR