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Cushion|Natural|GIA

0.78ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555739359

Certificate GIA 6555739359

Diamond specifications and retailer prices

From €827 EUR
$924 USD
As of November 1, 2026
Save €312 EUR (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,139 EUR at GemTrove · As of November 1, 2026
View at GemTrove

About this 0.78ct natural cushion diamond

This 0.78ct natural cushion sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555739359. Listed at 5 retailers as of November 1, 2026, with prices from €827 to €1,139, a €312 spread on the same certified stone. GemTrove lists it at €1,139. 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

0.78
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555739359
Dimensions5.13 × 5.01 × 3.41 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal
Top View
5.13 mm5.01 mm0.78 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555739359
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.1%

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 1
Current: €1,139 EUR|Low: €813 EUR|High: €1,139 EUR|Avg: €930 EUR
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3€827 EUR
Retailer 5€851 EUR
Retailer 2€851 EUR
Retailer 4€932 EUR
GemTrove€1,139 EUR

39 data points across 5 retailers

5 retailers€827 EUR to €1,139 EUR

A
Cheapest Retailer
-
€827 EUR
$924 USD
A
Retailer 2
-
€851 EUR
SGD 1,285 SGD
View
A
Retailer 3
-
€851 EUR
£749 GBP
View
A
Retailer 4
-
€932 EUR
$1,041 USD
View
Most Expensive
B+
GemTrove
GT-N-00957446-98 · Nov 1
€1,139 EUR
A$1,958 AUD
View
4 more retailers have this diamond
Prices start from €827 EURSave up to €312 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
0.78ct Cushion
€827 EUR