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Marquise|Natural|GIA

0.80ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6442916934

Certificate GIA 6442916934

Diamond specifications and retailer prices

From $3,315 AUD
$2,323 USD
As of November 2, 2026
Save $1,741 AUD (34%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,055 AUD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-carat band, graded I 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 6442916934. Listed at 7 retailers as of October 30, 2026, with prices from $3,315 to $5,055, a $1,741 spread on the same certified stone. 77 Diamonds lists it at $5,055. 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

0.80
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6442916934
Dimensions9.11 × 4.87 × 2.98 mm
L/W Ratio1.87
Top View
9.11 mm4.87 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6442916934
Side View
Table 59.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 61.2%

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: Nov 2
Current: $5,055 AUD|Low: $3,014 AUD|High: $5,062 AUD|Avg: $4,206 AUD|+2.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 2$3,315 AUD
Retailer 3$4,109 AUD
Retailer 4$4,324 AUD
Retailer 5$4,324 AUD
77 Diamonds$5,055 AUD

35 data points across 5 retailers

7 retailers$3,315 AUD to $5,055 AUD

B+
Cheapest Retailer
-
$3,315 AUD
$2,323 USD
Final sale: no returns
B
Retailer 2
-
$3,406 AUD
$2,387 USD
View
B
Retailer 3
-
$4,109 AUD
$2,880 USD
View
B
Retailer 4
-
$4,324 AUD
$3,030 USD
View
B
Retailer 5
-
$4,324 AUD
$3,030 USD
View
B
Retailer 6
-
$4,480 AUD
$3,140 USD
View
Most Expensive
B
77 Diamonds
MQMBASATY3P7 · Oct 30
$5,055 AUD
£2,790 GBP
View
6 more retailers have this diamond
Prices start from $3,315 AUDSave up to $1,741 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+
0.80ct Marquise
$3,315 AUD