Marquise|Natural|GIA

0.31ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6565618991

Certificate GIA 6565618991

Diamond specifications and retailer prices

From $352 USD
SGD 476 SGD
As of November 2, 2026
Save $267 USD (43%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $620 USD at Yorxs · As of November 2, 2026
View at Yorxs

About this 0.31ct natural marquise diamond

This 0.31ct natural marquise sits in the sub-half-carat band, graded F 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 6565618991. Listed at 9 retailers as of November 2, 2026, with prices from $352 to $620, a $267 spread on the same certified stone. Yorxs lists it at $620. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.91°
Pavilion angle37.46°
OriginNatural
Grading LabGIA
CertificateGIA 6565618991
Dimensions7.33 × 3.49 × 2.08 mm
L/W Ratio2.10
Culet sizeNone
Top View
7.33 mm3.49 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6565618991
Side View
Table 58.0%Crown 38.91°Girdle: THN-VTKPavilion 37.46°Culet: NoneDepth 59.5%

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: Nov 2
Current: $465 USD|Low: $352 USD|High: $620 USD|Avg: $466 USD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 3, 2026
Retailer 6$352 USD
Retailer 4$409 USD
Retailer 2$452 USD
Retailer 5$457 USD
Retailer 1$465 USD
Retailer 3$492 USD
Retailer 7$523 USD
Yorxs$620 USD

19 data points across 8 retailers

9 retailers$352 USD to $620 USD

B+
Cheapest Retailer
-
$352 USD
SGD 476 SGD
B+
Retailer 2
-
$394 USD
SGD 533 SGD
View
B+
Retailer 3
-
$409 USD
View
B
Retailer 4
-
$452 USD
£356 GBP
View
B
Retailer 5
-
$457 USD
View
B
Retailer 6
-
$465 USD
£366 GBP
View
B
Retailer 7
-
$492 USD
View
B
Retailer 8
-
$523 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Yorxs
621633242 · Nov 2
$620 USD
€590 EUR
View
8 more retailers have this diamond
Prices start from $352 USDSave up to $267 USD

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
$352 USD