Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7558653539

Certificate GIA 7558653539

Diamond specifications and retailer prices

From £135 GBP
₹17,252 INR
As of October 30, 2026
Save £307 GBP (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £938 GBP at NZ Jewellers · As of September 28, 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 7558653539. Listed at 17 retailers as of October 29, 2026, with a 227% 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
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7558653539
Dimensions4.34 × 4.35 × 2.69 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal
Top View
4.34 mm4.35 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558653539
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.8%

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 30
Current: £283 GBP|Low: £135 GBP|High: £475 GBP|Avg: £263 GBP|-6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 6£135 GBP
Retailer 2£162 GBP
Retailer 4£186 GBP
Retailer 3£206 GBP
Retailer 12£227 GBP
Retailer 11£230 GBP
Retailer 1£283 GBP
Retailer 8£288 GBP
Retailer 5£293 GBP
Retailer 7£296 GBP
Retailer 10£330 GBP
Retailer 9£443 GBP

25 data points across 12 retailers

17 retailers£135 GBP to £443 GBP

A
Cheapest Retailer
-
£135 GBP
₹17,252 INR
A
Retailer 2
-
£162 GBP
HK$1,700 HKD
View
A
Retailer 3
-
£186 GBP
$249 USD
View
Retailer 4
-
£205 GBP
$275 USD
View
Price last confirmed 30 days ago
A
Retailer 5
-
£206 GBP
SGD 373 SGD
View
A
Retailer 6
-
£227 GBP
$304 USD
View
A
Retailer 7
-
£230 GBP
A$474 AUD
View
Retailer 8
-
£231 GBP
$310 USD
View
Price last confirmed 32 days ago
Retailer 9
-
£279 GBP
$374 USD
View
Price last confirmed 31 days ago
A
Retailer 10
-
£283 GBP
$379 USD
View
A
Retailer 11
-
£288 GBP
$386 USD
View
B+
Retailer 12
-
£293 GBP
View
B+
Retailer 13
-
£296 GBP
ZAR 6,398 ZAR
View
Retailer 14
-
£329 GBP
A$678 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
£330 GBP
€421 EUR
View
B
Retailer 16
-
£443 GBP
View
Most Expensive
NZ Jewellers
cca0e59c-1fa5-47bb-b1e8-9a60c2a11332 · Sep 28
£938 GBP
$1,257 USD
View
Price last confirmed 33 days ago
16 more retailers have this diamond
Prices start from £135 GBPSave up to £307 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
£135 GBP