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Marquise|Natural|GIA

0.78ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 101

Certificate GIA 101

Diamond specifications and retailer prices

From $2,910 AUD
$2,044 USD
As of October 30, 2026
Save $230 AUD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,140 AUD at DreamStone · As of October 31, 2026
View at DreamStone

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 30, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 101
Dimensions8.89 × 5.20 mm
L/W Ratio1.71
Top View
8.89 mm5.20 mm0.78 ctE / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 101
Side View
Table 61.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 54.2%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $3,140 AUD|Low: $2,874 AUD|High: $3,210 AUD|Avg: $3,054 AUD|-2.2%
DreamStone
Retailer 2
September 23, 2026
Retailer 2$2,910 AUD
DreamStone$3,140 AUD

5 data points across 2 retailers

2 retailers$2,910 AUD to $3,140 AUD

B+
Cheapest Retailer
-
$2,910 AUD
$2,044 USD
Most Expensive
B
DreamStone
691ac801935720a6750a11db · Oct 31
$3,140 AUD
$2,206 USD
View
1 more retailer has this diamond
Prices start from $2,910 AUDSave up to $230 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
$2,910 AUD