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Heart|Natural|GIA

0.31ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 2528279907

Certificate GIA 2528279907

Diamond specifications and retailer prices

From £255 GBP
SGD 463 SGD
As of November 3, 2026
Save £87 GBP (25%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £387 GBP 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 G 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 2528279907. Listed at 7 retailers as of November 3, 2026, with a 34% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.71°
Pavilion angle40.57°
OriginNatural
Grading LabGIA
CertificateGIA 2528279907
Dimensions4.07 × 4.74 × 2.82 mm
L/W Ratio1.16
Culet sizeNone
Top View
4.07 mm4.74 mm0.31 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2528279907
Side View
Table 59.0%Crown 36.71°Girdle: THN-THKPavilion 40.57°Culet: NoneDepth 59.4%

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: Nov 3
Current: £255 GBP|Low: £255 GBP|High: £415 GBP|Avg: £337 GBP|-8.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 3, 2026
Retailer 1£255 GBP
Retailer 6£293 GBP
Retailer 5£303 GBP
Retailer 4£335 GBP
Retailer 3£339 GBP
Retailer 2£342 GBP
Wholesale Diamonds Direct£387 GBP

36 data points across 7 retailers

7 retailers£255 GBP to £342 GBP

A
Cheapest Retailer
-
£255 GBP
SGD 463 SGD
B+
Retailer 2
-
£293 GBP
SGD 531 SGD
View
B+
Retailer 3
-
£303 GBP
$407 USD
View
B
Retailer 4
-
£335 GBP
View
B+
Retailer 5
-
£339 GBP
$455 USD
View
B
Retailer 6
-
£342 GBP
View
Most Expensive
Wholesale Diamonds Direct
545794638 · Oct 27
£387 GBP
$520 USD
View
Price last confirmed 7 days ago
6 more retailers have this diamond
Prices start from £255 GBPSave up to £87 GBP

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 Heart
£255 GBP