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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 $1,639 NZD
$924 USD
As of November 1, 2026
Save $619 NZD (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,258 NZD 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 $1,639 to $2,258, a $619 spread on the same certified stone. GemTrove lists it at $2,258. 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
Colour
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: $2,258 NZD|Low: $1,612 NZD|High: $2,258 NZD|Avg: $1,843 NZD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3$1,639 NZD
Retailer 5$1,687 NZD
Retailer 2$1,688 NZD
Retailer 4$1,847 NZD
GemTrove$2,258 NZD

39 data points across 5 retailers

5 retailers$1,639 NZD to $2,258 NZD

A
Cheapest Retailer
-
$1,639 NZD
$924 USD
A
Retailer 2
-
$1,687 NZD
SGD 1,285 SGD
View
A
Retailer 3
-
$1,688 NZD
£749 GBP
View
A
Retailer 4
-
$1,847 NZD
$1,041 USD
View
Most Expensive
B+
GemTrove
GT-N-00957446-98 · Nov 1
$2,258 NZD
A$1,958 AUD
View
4 more retailers have this diamond
Prices start from $1,639 NZDSave up to $619 NZD

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
$1,639 NZD