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Round|Natural|GIA

0.30ct H I1 Round Natural Diamond

EX • H/I1 • GIA 2506926873

Certificate GIA 2506926873

Diamond specifications and retailer prices

From £143 GBP
HK$1,500 HKD
As of October 30, 2026
Save £584 GBP (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £727 GBP at NZ Jewellers · As of October 29, 2026
View at NZ Jewellers

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2506926873. Listed at 8 retailers as of October 29, 2026, with prices from £143 to £727, a £584 spread on the same certified stone. NZ Jewellers lists it at £727. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.30
Carat
H
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2506926873
Dimensions4.26 × 4.29 × 2.66 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
4.26 mm4.29 mm0.30 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506926873
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: £280 GBP|Low: £143 GBP|High: £313 GBP|Avg: £224 GBP|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 26, 2026
Retailer 4£143 GBP
Retailer 2£163 GBP
Retailer 3£209 GBP
Retailer 6£242 GBP
Retailer 1£280 GBP
Retailer 5£313 GBP

17 data points across 6 retailers

8 retailers£143 GBP to £727 GBP

A
Cheapest Retailer
-
£143 GBP
HK$1,500 HKD
A
Retailer 2
-
£160 GBP
$215 USD
View
B+
Retailer 3
-
£173 GBP
$232 USD
View
B+
Retailer 4
-
£179 GBP
$240 USD
View
B+
Retailer 5
-
£209 GBP
$281 USD
View
B+
Retailer 6
-
£216 GBP
$290 USD
View
B
Retailer 7
-
£280 GBP
€357 EUR
View
Most Expensive
B
NZ Jewellers
b2b35425-cce5-415a-9143-3000b604aa63 · Oct 29
£727 GBP
$974 USD
View
7 more retailers have this diamond
Prices start from £143 GBPSave up to £584 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
£143 GBP