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Marquise|Natural|GIA

0.78ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 5

Certificate GIA 5

Diamond specifications and retailer prices

From $1,873 AUD
As of November 4, 2026
Save $3,524 AUD (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,397 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 8 retailers as of November 4, 2026, with prices from $1,873 to $5,397, a $3,524 spread on the same certified stone. NZ Jewellers lists it at $5,397. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.78
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5
Dimensions9.67 × 4.66 × 2.94 mm
L/W Ratio2.08
Top View
9.67 mm4.66 mm0.78 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 5
Side View
Table 53.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,397 AUD|Low: $1,873 AUD|High: $5,397 AUD|Avg: $2,526 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 1, 2026
Retailer 8$1,873 AUD
Retailer 4$1,896 AUD
Retailer 5$2,004 AUD
Retailer 7$2,004 AUD
Retailer 2$2,097 AUD
Retailer 3$2,240 AUD
Retailer 6$2,313 AUD
NZ Jewellers$5,397 AUD

3 data points across 8 retailers

8 retailers$1,873 AUD to $5,397 AUD

B+
Cheapest Retailer
-
$1,873 AUD
B+
Retailer 2
-
$1,896 AUD
View
Retailer 3
-
$2,004 AUD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$2,004 AUD
View
B
Retailer 5
-
$2,097 AUD
View
B
Retailer 6
-
$2,240 AUD
View
B
Retailer 7
-
$2,313 AUD
View
Most Expensive
C
NZ Jewellers
6a2b832b-697b-4db0-b184-df7430c21bca · Nov 5
$5,397 AUD
$3,708 USD
View
7 more retailers have this diamond
Prices start from $1,873 AUDSave up to $3,524 AUD

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.

B+
0.78ct Marquise
$1,873 AUD