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Cushion|Natural|GIA

0.31ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6552407021

Certificate GIA 6552407021

Diamond specifications and retailer prices

From $648 AUD
SGD 614 SGD
As of October 31, 2026
Save $937 AUD (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,586 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.31ct natural cushion diamond

This 0.31ct natural cushion 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 6552407021. Listed at 11 retailers as of October 28, 2026, with prices from $648 to $1,586, a $937 spread on the same certified stone. Queensmith lists it at $1,586. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552407021
Dimensions3.84 × 3.84 × 2.51 mm
L/W Ratio1.00
Top View
3.84 mm3.84 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552407021
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 65.3%

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: Oct 31
Current: $1,586 AUD|Low: $648 AUD|High: $1,651 AUD|Avg: $1,056 AUD|-1.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 8$648 AUD
Retailer 2$816 AUD
Retailer 7$842 AUD
Retailer 10$898 AUD
Retailer 9$903 AUD
Retailer 11$928 AUD
Retailer 5$992 AUD
Retailer 6$1,016 AUD
Retailer 3$1,119 AUD
Retailer 4$1,513 AUD
Queensmith$1,586 AUD

37 data points across 11 retailers

11 retailers$648 AUD to $1,586 AUD

A
Cheapest Retailer
-
$648 AUD
SGD 614 SGD
B+
Retailer 2
-
$816 AUD
£450 GBP
View
B+
Retailer 3
-
$842 AUD
$590 USD
View
B+
Retailer 4
-
$898 AUD
£496 GBP
View
B+
Retailer 5
-
$903 AUD
$633 USD
View
B+
Retailer 6
-
$928 AUD
$650 USD
View
B
Retailer 7
-
$992 AUD
€662 EUR
View
B
Retailer 8
-
$1,016 AUD
ZAR 11,502 ZAR
View
Retailer 9
-
$1,119 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$1,513 AUD
£835 GBP
View
Most Expensive
B
Queensmith
6552407021 · Oct 28
$1,586 AUD
£875 GBP
View
10 more retailers have this diamond
Prices start from $648 AUDSave up to $937 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 Cushion
$648 AUD