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Heart|Natural|GIA

0.31ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1563394559

Certificate GIA 1563394559

Diamond specifications and retailer prices

From £197 GBP
₹25,171 INR
As of October 31, 2026
Save £441 GBP (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,059 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.31ct natural heart diamond

This 0.31ct natural heart sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563394559. Listed at 12 retailers as of October 31, 2026, with a 223% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563394559
Dimensions3.94 × 4.59 × 2.85 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
3.94 mm4.59 mm0.31 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1563394559
Side View
Table 61.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 62.0%

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: £1,059 GBP|Low: £197 GBP|High: £1,059 GBP|Avg: £427 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6£197 GBP
Retailer 10£276 GBP
Retailer 9£298 GBP
Retailer 8£308 GBP
Retailer 3£319 GBP
Retailer 4£356 GBP
Retailer 11£372 GBP
Retailer 7£379 GBP
Retailer 2£559 GBP
Retailer 5£638 GBP
NZ Jewellers£1,059 GBP

34 data points across 11 retailers

12 retailers£197 GBP to £638 GBP

A
Cheapest Retailer
-
£197 GBP
₹25,171 INR
A
Retailer 2
-
£276 GBP
$370 USD
View
B+
Retailer 3
-
£298 GBP
$399 USD
View
B+
Retailer 4
-
£308 GBP
$413 USD
View
B+
Retailer 5
-
£319 GBP
$427 USD
View
B+
Retailer 6
-
£356 GBP
View
B+
Retailer 7
-
£372 GBP
$498 USD
View
B+
Retailer 8
-
£379 GBP
View
B
Retailer 9
-
£382 GBP
$512 USD
View
B
Retailer 10
-
£559 GBP
View
B
Retailer 11
-
£638 GBP
View
Most Expensive
NZ Jewellers
dcd3039b-ca9c-4229-a5bd-cd82c731c866 · Oct 30
£1,059 GBP
$1,419 USD
View
Price under review
11 more retailers have this diamond
Prices start from £197 GBPSave up to £441 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
£197 GBP