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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 $642 SGD
$502 USD
As of November 1, 2026
Save $391 SGD (38%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,539 SGD at MOH London · As of November 1, 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: $1,539 SGD|Low: $642 SGD|High: $2,089 SGD|Avg: $988 SGD|-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$642 SGD
Retailer 3$666 SGD
Retailer 4$684 SGD
Retailer 8$717 SGD
Retailer 9$717 SGD
Retailer 13$768 SGD
Retailer 6$835 SGD
Retailer 10$901 SGD
Retailer 5$1,002 SGD
Retailer 7$1,033 SGD
Retailer 2$1,348 SGD
MOH London$1,539 SGD
Retailer 12$2,089 SGD

39 data points across 13 retailers

16 retailers$642 SGD to $1,033 SGD

B+
Cheapest Retailer
-
$642 SGD
$502 USD
B+
Retailer 2
-
$666 SGD
$521 USD
View
Retailer 3
-
$684 SGD
$535 USD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$717 SGD
$561 USD
View
B
Retailer 5
-
$717 SGD
$561 USD
View
B
Retailer 6
-
$768 SGD
$601 USD
View
B
Retailer 7
-
$834 SGD
$653 USD
View
B
Retailer 8
-
$835 SGD
£514 GBP
View
B
Retailer 9
-
$839 SGD
$656 USD
View
B
Retailer 10
-
$901 SGD
€671 EUR
View
B
Retailer 11
-
$933 SGD
$730 USD
View
Retailer 12
-
$1,002 SGD
A$1,206 AUD
View
Price last confirmed 29 days ago
B
Retailer 13
-
$1,033 SGD
ZAR 13,054 ZAR
View
Retailer 14
-
$1,348 SGD
£830 GBP
View
Price under review
Most Expensive
MOH London
EADBD8C63 · Nov 1
$1,539 SGD
£948 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $642 SGDSave up to $391 SGD

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
$642 SGD