CaratHunter
Plans
Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5566546432

Certificate GIA 5566546432

Diamond specifications and retailer prices

From £123 GBP
₹15,632 INR
As of October 30, 2026
Save £305 GBP (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £427 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566546432. Listed at 8 retailers as of October 26, 2026, with prices from £123 to £427, a £305 spread on the same certified stone. MOH London lists it at £427. 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

0.30
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5566546432
Dimensions4.31 × 4.33 × 2.66 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
4.31 mm4.33 mm0.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5566546432
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.6%

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: £427 GBP|Low: £122 GBP|High: £431 GBP|Avg: £246 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2£123 GBP
Retailer 6£153 GBP
Retailer 8£181 GBP
Retailer 5£216 GBP
Retailer 7£267 GBP
Retailer 4£271 GBP
Retailer 3£306 GBP
MOH London£427 GBP

22 data points across 8 retailers

8 retailers£123 GBP to £427 GBP

A
Cheapest Retailer
-
£123 GBP
₹15,632 INR
A
Retailer 2
-
£153 GBP
HK$1,600 HKD
View
A
Retailer 3
-
£181 GBP
$242 USD
View
A
Retailer 4
-
£216 GBP
A$446 AUD
View
B+
Retailer 5
-
£267 GBP
$357 USD
View
B+
Retailer 6
-
£271 GBP
View
B
Retailer 7
-
£306 GBP
€390 EUR
View
Most Expensive
B
MOH London
ABF5CD583 · Oct 26
£427 GBP
View
7 more retailers have this diamond
Prices start from £123 GBPSave up to £305 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
0.30ct Round
£123 GBP