Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1525227984

Certificate GIA 1525227984

Diamond specifications and retailer prices

From £135 GBP
₹17,252 INR
As of October 30, 2026
Save £736 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £871 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 1525227984. Listed at 17 retailers as of October 30, 2026, with prices from £135 to £871, a £736 spread on the same certified stone. NZ Jewellers lists it at £871. 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1525227984
Dimensions4.35 × 4.33 × 2.71 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Feather, Crystal, Knot
Top View
4.35 mm4.33 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525227984
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.4%

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: Oct 30
Current: £871 GBP|Low: £135 GBP|High: £912 GBP|Avg: £299 GBP|-4.5%
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
October 31, 2026
Retailer 12£135 GBP
Retailer 5£162 GBP
Retailer 8£188 GBP
Retailer 3£193 GBP
Retailer 6£206 GBP
Retailer 15£208 GBP
Retailer 4£216 GBP
Retailer 7£252 GBP
Retailer 10£256 GBP
Retailer 2£286 GBP
Retailer 14£289 GBP
Retailer 9£296 GBP
Retailer 13£298 GBP
Retailer 11£375 GBP
Retailer 16£448 GBP
NZ Jewellers£871 GBP

22 data points across 16 retailers

17 retailers£135 GBP to £871 GBP

A
Cheapest Retailer
-
£135 GBP
₹17,252 INR
A
Retailer 2
-
£162 GBP
HK$1,700 HKD
View
A
Retailer 3
-
£188 GBP
$252 USD
View
A
Retailer 4
-
£193 GBP
$259 USD
View
A
Retailer 5
-
£206 GBP
SGD 373 SGD
View
A
Retailer 6
-
£208 GBP
$279 USD
View
A
Retailer 7
-
£216 GBP
$289 USD
View
A
Retailer 8
-
£252 GBP
$338 USD
View
A
Retailer 9
-
£256 GBP
$343 USD
View
A
Retailer 10
-
£286 GBP
$383 USD
View
A
Retailer 11
-
£289 GBP
$388 USD
View
B+
Retailer 12
-
£296 GBP
View
B+
Retailer 13
-
£298 GBP
ZAR 6,452 ZAR
View
Retailer 14
-
£328 GBP
A$676 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
£375 GBP
€478 EUR
View
B
Retailer 16
-
£448 GBP
View
Most Expensive
B
NZ Jewellers
19204791-518a-418e-9a0e-e222d8f3a2dd · Oct 30
£871 GBP
$1,167 USD
View
16 more retailers have this diamond
Prices start from £135 GBPSave up to £736 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