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Cushion|Natural|GIA

1.00ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6555301762

Certificate GIA 6555301762

Diamond specifications and retailer prices

From €806 EUR
As of November 6, 2026
Save €281 EUR (26%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €1,088 EUR at GemTrove · As of November 6, 2026
View at GemTrove

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555301762. Listed at 7 retailers as of November 6, 2026, with prices from €806 to €1,088, a €281 spread on the same certified stone. GemTrove lists it at €1,088. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555301762
Dimensions5.61 × 5.54 × 3.73 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud
Top View
5.61 mm5.54 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555301762
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.4%

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: €1,088 EUR|Low: €725 EUR|High: €1,101 EUR|Avg: €922 EUR
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7€806 EUR
Retailer 6€811 EUR
Retailer 3€858 EUR
Retailer 2€911 EUR
Retailer 5€916 EUR
Retailer 4€996 EUR
GemTrove€1,088 EUR

41 data points across 7 retailers

7 retailers€806 EUR to €1,088 EUR

A
Cheapest Retailer
-
€806 EUR
A
Retailer 2
-
€811 EUR
View
Final sale: no returns
A
Retailer 3
-
€858 EUR
View
A
Retailer 4
-
€911 EUR
View
A
Retailer 5
-
€916 EUR
View
A
Retailer 6
-
€996 EUR
View
Most Expensive
B+
GemTrove
GT-N-00979305-98 · Nov 6
€1,088 EUR
A$1,868 AUD
View
6 more retailers have this diamond
Prices start from €806 EURSave up to €281 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
€806 EUR