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Heart|Natural|GIA

0.31ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6562745373

Certificate GIA 6562745373

Diamond specifications and retailer prices

From $549 AUD
£303 GBP
As of November 2, 2026
Save $442 AUD (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $991 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 0.31ct natural heart diamond

This 0.31ct natural heart sits in the sub-half-carat band, graded I 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 6562745373. Listed at 4 retailers as of November 2, 2026, with prices from $549 to $991, a $442 spread on the same certified stone. MOH London lists it at $991. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562745373
Dimensions3.99 × 4.63 × 2.79 mm
L/W Ratio1.16
Key to symbols
Feather
Top View
3.99 mm4.63 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6562745373
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 60.3%

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 2
Current: $991 AUD|Low: $545 AUD|High: $991 AUD|Avg: $659 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$549 AUD
Retailer 4$631 AUD
Retailer 3$668 AUD
MOH London$991 AUD

5 data points across 4 retailers

4 retailers$549 AUD to $991 AUD

B+
Cheapest Retailer
-
$549 AUD
£303 GBP
B
Retailer 2
-
$631 AUD
$442 USD
View
B
Retailer 3
-
$668 AUD
$468 USD
View
Most Expensive
B
MOH London
C89490FA3 · Nov 2
$991 AUD
£547 GBP
View
3 more retailers have this diamond
Prices start from $549 AUDSave up to $442 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 Heart
$549 AUD