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Marquise|Natural|GIA

0.31ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 3545743431

Certificate GIA 3545743431

Diamond specifications and retailer prices

From $716 AUD
$502 USD
As of November 1, 2026
Save $437 AUD (38%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,718 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 0.31ct natural marquise diamond

This 0.31ct natural marquise sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545743431. Listed at 16 retailers as of October 30, 2026, with a 61% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.31
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545743431
Dimensions7.64 × 3.33 × 2.11 mm
L/W Ratio2.29
Top View
7.64 mm3.33 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545743431
Side View
Table 57.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 63.3%

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 1
Current: $1,718 AUD|Low: $716 AUD|High: $2,332 AUD|Avg: $1,103 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 11$716 AUD
Retailer 3$743 AUD
Retailer 4$763 AUD
Retailer 8$800 AUD
Retailer 9$800 AUD
Retailer 13$858 AUD
Retailer 6$932 AUD
Retailer 10$1,005 AUD
Retailer 5$1,118 AUD
Retailer 7$1,153 AUD
Retailer 2$1,505 AUD
MOH London$1,718 AUD
Retailer 12$2,332 AUD

39 data points across 13 retailers

16 retailers$716 AUD to $1,153 AUD

B+
Cheapest Retailer
-
$716 AUD
$502 USD
B+
Retailer 2
-
$743 AUD
$521 USD
View
Retailer 3
-
$763 AUD
$535 USD
View
Price last confirmed 26 days ago
B
Retailer 4
-
$800 AUD
$561 USD
View
B
Retailer 5
-
$800 AUD
$561 USD
View
B
Retailer 6
-
$858 AUD
$601 USD
View
B
Retailer 7
-
$931 AUD
$653 USD
View
B
Retailer 8
-
$932 AUD
£514 GBP
View
B
Retailer 9
-
$936 AUD
$656 USD
View
B
Retailer 10
-
$1,005 AUD
€671 EUR
View
B
Retailer 11
-
$1,041 AUD
$730 USD
View
Retailer 12
-
$1,118 AUD
View
Price last confirmed 30 days ago
B
Retailer 13
-
$1,153 AUD
ZAR 13,054 ZAR
View
Retailer 14
-
$1,505 AUD
£830 GBP
View
Price under review
Most Expensive
MOH London
EADBD8C63 · Nov 2
$1,718 AUD
£948 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $716 AUDSave up to $437 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+
0.31ct Marquise
$716 AUD