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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 HK$7,249 HKD
$924 USD
As of November 1, 2026
Save HK$2,736 HKD (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$9,985 HKD 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 HK$7,249 to HK$9,985, a HK$2,736 spread on the same certified stone. GemTrove lists it at HK$9,985. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$9,985 HKD|Low: HK$7,126 HKD|High: HK$9,985 HKD|Avg: HK$8,148 HKD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3HK$7,249 HKD
Retailer 5HK$7,460 HKD
Retailer 2HK$7,464 HKD
Retailer 4HK$8,167 HKD
GemTroveHK$9,985 HKD

39 data points across 5 retailers

5 retailersHK$7,249 HKD to HK$9,985 HKD

A
Cheapest Retailer
-
HK$7,249 HKD
$924 USD
A
Retailer 2
-
HK$7,460 HKD
SGD 1,285 SGD
View
A
Retailer 3
-
HK$7,464 HKD
£749 GBP
View
A
Retailer 4
-
HK$8,167 HKD
$1,041 USD
View
Most Expensive
B+
GemTrove
GT-N-00957446-98 · Nov 1
HK$9,985 HKD
A$1,958 AUD
View
4 more retailers have this diamond
Prices start from HK$7,249 HKDSave up to HK$2,736 HKD

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
HK$7,249 HKD