Round|Natural|GIA

0.25ct J I1 Round Natural Diamond

VG • J/I1 • GIA 1259515559

Certificate GIA 1259515559

Diamond specifications and retailer prices

From £132 GBP
$177 USD
As of October 31, 2026
Save £148 GBP (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £597 GBP at NZ Jewellers · As of October 29, 2026
View at NZ Jewellers

About this 0.25ct natural round diamond

This 0.25ct natural round sits in the sub-half-carat band, graded J colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by GIA 1259515559. Listed at 9 retailers as of October 31, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.25
Carat
J
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1259515559
Dimensions3.96 × 4.00 × 2.51 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
3.96 mm4.00 mm0.25 ctJ / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1259515559
Side View
Table 58.0%Crown 36.5°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £280 GBP|Low: £128 GBP|High: £343 GBP|Avg: £239 GBP|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3£130 GBP
Retailer 2£142 GBP
Retailer 1£280 GBP
Retailer 4£343 GBP

16 data points across 4 retailers

9 retailers£132 GBP to £280 GBP

Retailer 1
-
£132 GBP
$177 USD
Price last confirmed 25 days ago
B+
Retailer 2
-
£132 GBP
$177 USD
View
B+
Retailer 3
-
£142 GBP
$190 USD
View
Retailer 4
-
£147 GBP
$197 USD
View
Price last confirmed 33 days ago
Retailer 5
-
£178 GBP
$238 USD
View
Price last confirmed 23 days ago
B+
Retailer 6
-
£178 GBP
$238 USD
View
B
Retailer 7
-
£280 GBP
€357 EUR
View
Retailer 8
-
£597 GBP
$800 USD
View
Price under review
Most Expensive
NZ Jewellers
840ad264-dd8b-48f3-9a23-b0194ca0f080 · Oct 29
£597 GBP
$800 USD
View
Price under review
8 more retailers have this diamond
Prices start from £132 GBPSave up to £148 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.

B+
0.25ct Round
£132 GBP