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Heart|Natural|GIA

0.31ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 2566525326

Certificate GIA 2566525326

Diamond specifications and retailer prices

From $556 AUD
$390 USD
As of November 2, 2026
Save $210 AUD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $873 AUD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 0.31ct natural heart diamond

This 0.31ct natural heart 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 2566525326. Listed at 8 retailers as of October 31, 2026, with a 38% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Crown angle36.08°
Pavilion angle39.86°
OriginNatural
Grading LabGIA
CertificateGIA 2566525326
Dimensions4.13 × 4.65 × 2.73 mm
L/W Ratio1.13
Culet sizeNone
Top View
4.13 mm4.65 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566525326
Side View
Table 59.0%Crown 36.08°Girdle: STK-THKPavilion 39.86°Culet: NoneDepth 58.6%

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: $719 AUD|Low: $556 AUD|High: $873 AUD|Avg: $705 AUD|+5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 2, 2026
Retailer 5$556 AUD
Retailer 6$589 AUD
Retailer 4$666 AUD
Retailer 1$719 AUD
Retailer 2$757 AUD
Retailer 3$766 AUD
Wholesale Diamonds Direct$873 AUD

26 data points across 7 retailers

8 retailers$556 AUD to $766 AUD

B+
Cheapest Retailer
-
$556 AUD
$390 USD
B+
Retailer 2
-
$589 AUD
SGD 558 SGD
View
B+
Retailer 3
-
$637 AUD
SGD 603 SGD
View
B+
Retailer 4
-
$666 AUD
$467 USD
View
B
Retailer 5
-
$719 AUD
£397 GBP
View
B
Retailer 6
-
$757 AUD
£418 GBP
View
B
Retailer 7
-
$766 AUD
$537 USD
View
Most Expensive
Wholesale Diamonds Direct
482426092 · Oct 27
$873 AUD
$612 USD
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from $556 AUDSave up to $210 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
$556 AUD