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Marquise|Natural|GIA

0.31ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 7531899976

Certificate GIA 7531899976

Diamond specifications and retailer prices

From $311 AUD
$218 USD
As of November 1, 2026
Save $146 AUD (32%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $457 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.31ct natural marquise diamond

This 0.31ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7531899976. Listed at 4 retailers as of November 1, 2026, with prices from $311 to $457, a $146 spread on the same certified stone. 77 Diamonds lists it at $457. 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

0.31
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7531899976
Dimensions6.73 × 3.60 × 2.28 mm
L/W Ratio1.87
Culet sizeNone
Key to symbols
Cloud
Top View
6.73 mm3.60 mm0.31 ctI / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 7531899976
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $457 AUD|Low: $274 AUD|High: $459 AUD|Avg: $368 AUD|+5.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4$311 AUD
Retailer 3$313 AUD
Retailer 2$392 AUD
77 Diamonds$457 AUD

39 data points across 4 retailers

4 retailers$311 AUD to $457 AUD

A
Cheapest Retailer
-
$311 AUD
$218 USD
Final sale: no returns
B+
Retailer 2
-
$313 AUD
SGD 296 SGD
View
B+
Retailer 3
-
$392 AUD
$275 USD
View
Most Expensive
B
77 Diamonds
MQCPKZXFZZTC · Nov 2
$457 AUD
£252 GBP
View
3 more retailers have this diamond
Prices start from $311 AUDSave up to $146 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.

A
0.31ct Marquise
$311 AUD