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Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566481298

Certificate GIA 2566481298

Diamond specifications and retailer prices

From £148 GBP
₹18,902 INR
As of October 31, 2026
Save £334 GBP (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £946 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.31ct natural round diamond

This 0.31ct natural round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566481298. Listed at 17 retailers as of October 26, 2026, with a 226% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566481298
Dimensions4.36 × 4.39 × 2.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
4.36 mm4.39 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566481298
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.5%

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: £946 GBP|Low: £148 GBP|High: £977 GBP|Avg: £326 GBP|-3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 2£148 GBP
Retailer 9£182 GBP
Retailer 8£188 GBP
Retailer 14£209 GBP
Retailer 6£222 GBP
Retailer 15£233 GBP
Retailer 5£234 GBP
Retailer 4£243 GBP
Retailer 10£267 GBP
Retailer 16£275 GBP
Retailer 12£281 GBP
Retailer 7£312 GBP
Retailer 11£355 GBP
Retailer 3£365 GBP
Retailer 13£424 GBP
Retailer 17£482 GBP
NZ Jewellers£946 GBP

22 data points across 17 retailers

17 retailers£148 GBP to £482 GBP

A
Cheapest Retailer
-
£148 GBP
₹18,902 INR
A
Retailer 2
-
£182 GBP
HK$1,900 HKD
View
A
Retailer 3
-
£188 GBP
$252 USD
View
A
Retailer 4
-
£209 GBP
$280 USD
View
A
Retailer 5
-
£222 GBP
SGD 402 SGD
View
A
Retailer 6
-
£233 GBP
$312 USD
View
A
Retailer 7
-
£234 GBP
SGD 424 SGD
View
A
Retailer 8
-
£243 GBP
A$502 AUD
View
A
Retailer 9
-
£267 GBP
View
A
Retailer 10
-
£275 GBP
$368 USD
View
A
Retailer 11
-
£281 GBP
$377 USD
View
B+
Retailer 12
-
£312 GBP
$418 USD
View
B+
Retailer 13
-
£355 GBP
€453 EUR
View
B+
Retailer 14
-
£365 GBP
$489 USD
View
B+
Retailer 15
-
£424 GBP
View
B
Retailer 16
-
£482 GBP
View
Most Expensive
NZ Jewellers
f98440c1-a12f-4388-b13c-82faf4528c48 · Oct 30
£946 GBP
$1,267 USD
View
Price under review
16 more retailers have this diamond
Prices start from £148 GBPSave up to £334 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 Round
£148 GBP