CaratHunter
Plans
Marquise|Natural|GIA

0.78ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1236939128

Certificate GIA 1236939128

Diamond specifications and retailer prices

From $1,391 AUD
$975 USD
As of November 1, 2026
Save $1,660 AUD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,052 AUD at MOH London · As of November 2, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1236939128. Listed at 8 retailers as of November 1, 2026, with prices from $1,391 to $3,052, a $1,660 spread on the same certified stone. MOH London lists it at $3,052. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1236939128
Dimensions8.87 × 4.91 × 3.24 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizeNone
Top View
8.87 mm4.91 mm0.78 ctJ / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 1236939128
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.0%

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: $3,052 AUD|Low: $1,391 AUD|High: $3,088 AUD|Avg: $2,010 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$1,391 AUD
Retailer 8$1,719 AUD
Retailer 6$1,841 AUD
Retailer 7$1,841 AUD
Retailer 5$1,898 AUD
Retailer 3$1,902 AUD
Retailer 2$2,330 AUD
MOH London$3,052 AUD

44 data points across 8 retailers

8 retailers$1,391 AUD to $3,052 AUD

A
Cheapest Retailer
-
$1,391 AUD
$975 USD
B+
Retailer 2
-
$1,719 AUD
$1,205 USD
View
B+
Retailer 3
-
$1,841 AUD
$1,290 USD
View
B+
Retailer 4
-
$1,841 AUD
$1,290 USD
View
B+
Retailer 5
-
$1,898 AUD
$1,330 USD
View
B+
Retailer 6
-
$1,902 AUD
£1,050 GBP
View
B
Retailer 7
-
$2,330 AUD
€1,555 EUR
View
Most Expensive
B
MOH London
7A9F724BF · Nov 2
$3,052 AUD
£1,684 GBP
View
7 more retailers have this diamond
Prices start from $1,391 AUDSave up to $1,660 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.

A
0.78ct Marquise
$1,391 AUD