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Marquise|Natural|GIA

0.31ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 7552847151

Certificate GIA 7552847151

Diamond specifications and retailer prices

From $290 AUD
SGD 275 SGD
As of November 1, 2026
Save $130 AUD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $420 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7552847151. Listed at 3 retailers as of November 1, 2026, with prices from $290 to $420, a $130 spread on the same certified stone. 77 Diamonds lists it at $420. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7552847151
Dimensions7.63 × 3.47 × 2.04 mm
L/W Ratio2.20
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
7.63 mm3.47 mm0.31 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 7552847151
Side View
Table 62.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 58.9%

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: $420 AUD|Low: $247 AUD|High: $420 AUD|Avg: $324 AUD|+4.2%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$290 AUD
Retailer 3$291 AUD
77 Diamonds$420 AUD

39 data points across 3 retailers

3 retailers$290 AUD to $420 AUD

B+
Cheapest Retailer
-
$290 AUD
SGD 275 SGD
B+
Retailer 2
-
$291 AUD
$204 USD
View
Final sale: no returns
Most Expensive
B
77 Diamonds
MQCPSRUDXMUC · Nov 2
$420 AUD
£232 GBP
View
2 more retailers have this diamond
Prices start from $290 AUDSave up to $130 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
$290 AUD