CaratHunter
Plans
Heart|Natural|GIA

0.31ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 2197496507

Certificate GIA 2197496507

Diamond specifications and retailer prices

From £402 GBP
$539 USD
As of October 29, 2026
Save £198 GBP (33%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £935 GBP at MOH London · As of October 29, 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 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 2197496507. Listed at 12 retailers as of October 29, 2026, with a 49% 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
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2197496507
Dimensions4.64 × 4.33 × 2.58 mm
L/W Ratio1.07
Key to symbols
Feather
Top View
4.64 mm4.33 mm0.31 ctD / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2197496507
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £935 GBP|Low: £402 GBP|High: £1,262 GBP|Avg: £611 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9£402 GBP
Retailer 5£434 GBP
Retailer 6£434 GBP
Retailer 7£449 GBP
Retailer 8£464 GBP
Retailer 3£508 GBP
Retailer 4£552 GBP
Retailer 2£600 GBP
MOH London£935 GBP
Retailer 10£1,262 GBP

42 data points across 10 retailers

12 retailers£402 GBP to £600 GBP

B
Cheapest Retailer
-
£402 GBP
$539 USD
B
Retailer 2
-
£434 GBP
$581 USD
View
B
Retailer 3
-
£434 GBP
$581 USD
View
Retailer 4
-
£464 GBP
$622 USD
View
Price last confirmed 55 days ago
B
Retailer 5
-
£464 GBP
$622 USD
View
B
Retailer 6
-
£464 GBP
$622 USD
View
B
Retailer 7
-
£501 GBP
$671 USD
View
B
Retailer 8
-
£508 GBP
View
B
Retailer 9
-
£552 GBP
View
B
Retailer 10
-
£600 GBP
€766 EUR
View
Most Expensive
MOH London
224DF0E8C · Oct 29
£935 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £402 GBPSave up to £198 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.

B
0.31ct Heart
£402 GBP