CaratHunter
Plans
Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1539081595

Certificate GIA 1539081595

Diamond specifications and retailer prices

From $528 AUD
$370 USD
As of November 1, 2026
Save $645 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,172 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct natural cushion diamond

This 0.31ct natural cushion sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539081595. Listed at 11 retailers as of November 1, 2026, with prices from $528 to $1,172, a $645 spread on the same certified stone. MOH London lists it at $1,172. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1539081595
Dimensions3.74 × 3.66 × 2.56 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Key to symbols
Crystal, Cloud
Top View
3.74 mm3.66 mm0.31 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1539081595
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 70.0%

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: $1,172 AUD|Low: $521 AUD|High: $1,180 AUD|Avg: $751 AUD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5$528 AUD
Retailer 3$545 AUD
Retailer 9$547 AUD
Retailer 10$586 AUD
Retailer 4$659 AUD
Retailer 8$696 AUD
Retailer 7$787 AUD
Retailer 11$808 AUD
Retailer 6$936 AUD
Retailer 2$1,028 AUD
MOH London$1,172 AUD

44 data points across 11 retailers

11 retailers$528 AUD to $1,172 AUD

B+
Cheapest Retailer
-
$528 AUD
$370 USD
B+
Retailer 2
-
$547 AUD
$383 USD
View
B+
Retailer 3
-
$586 AUD
$411 USD
View
B
Retailer 4
-
$659 AUD
£363 GBP
View
Retailer 5
-
$693 AUD
$486 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$696 AUD
£384 GBP
View
B
Retailer 7
-
$787 AUD
ZAR 8,914 ZAR
View
Retailer 8
-
$808 AUD
View
Price last confirmed 28 days ago
B
Retailer 9
-
$936 AUD
€625 EUR
View
B
Retailer 10
-
$1,028 AUD
£567 GBP
View
Most Expensive
B
MOH London
B019B4339 · Nov 1
$1,172 AUD
£647 GBP
View
10 more retailers have this diamond
Prices start from $528 AUDSave up to $645 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 Cushion
$528 AUD