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Marquise|Natural|GIA

0.78ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 5151705403

Certificate GIA 5151705403

Diamond specifications and retailer prices

From $2,914 AUD
$2,047 USD
As of October 31, 2026
Save $3,388 AUD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,303 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5151705403. Listed at 5 retailers as of October 31, 2026, with prices from $2,914 to $6,303, a $3,388 spread on the same certified stone. MOH London lists it at $6,303. 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
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5151705403
Dimensions8.89 × 5.20 × 2.82 mm
L/W Ratio1.71
Top View
8.89 mm5.20 mm0.78 ctE / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 5151705403
Side View
Table 61.0%CrownGirdle: THN-VTKPavilionCulet: SmallDepth 54.2%

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: Oct 31
Current: $6,303 AUD|Low: $2,649 AUD|High: $13,265 AUD|Avg: $5,919 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5$2,914 AUD
Retailer 2$3,845 AUD
Retailer 4$4,031 AUD
Retailer 3$4,459 AUD
Retailer 6$5,177 AUD
MOH London$6,303 AUD
Retailer 7$13,265 AUD

38 data points across 7 retailers

5 retailers$2,914 AUD to $6,303 AUD

B+
Cheapest Retailer
-
$2,914 AUD
$2,047 USD
Final sale: no returns
B
Retailer 2
-
$3,845 AUD
£2,127 GBP
View
Retailer 3
-
$4,031 AUD
View
Price last confirmed 24 days ago
C
Retailer 4
-
$5,177 AUD
$3,637 USD
View
Most Expensive
C
MOH London
9CE974553 · Nov 1
$6,303 AUD
£3,486 GBP
View
4 more retailers have this diamond
Prices start from $2,914 AUDSave up to $3,388 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
$2,914 AUD