Round|Natural|GIA

1.02ct H SI1 Round Natural Diamond

GD • H/SI1 • GIA 1315385138

Certificate GIA 1315385138

Diamond specifications and retailer prices

From £2,178 GBP
As of November 6, 2026
Save £2,540 GBP (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,291 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1315385138. Listed at 16 retailers as of November 5, 2026, with a 117% 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

1.02
Carat
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1315385138
Dimensions6.19 × 6.13 × 4.06 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
6.19 mm6.13 mm1.02 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1315385138
Side View
Table 59.0%Crown 37.5°Girdle: THK-VTKPavilion 40.8°Culet: NoneDepth 65.9%

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: Nov 6
Current: £2,785 GBP|Low: £2,178 GBP|High: £4,584 GBP|Avg: £2,894 GBP|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10£2,178 GBP
Retailer 6£2,236 GBP
Retailer 9£2,326 GBP
Retailer 8£2,374 GBP
Retailer 2£2,548 GBP
Retailer 1£2,785 GBP
Retailer 7£2,901 GBP
Retailer 3£3,147 GBP
Retailer 4£3,306 GBP
Retailer 5£4,517 GBP

43 data points across 10 retailers

16 retailers£2,178 GBP to £4,719 GBP

B+
Cheapest Retailer
-
£2,178 GBP
B
Retailer 2
-
£2,236 GBP
View
B
Retailer 3
-
£2,326 GBP
View
B
Retailer 4
-
£2,374 GBP
View
B
Retailer 5
-
£2,453 GBP
View
Retailer 6
-
£2,453 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£2,548 GBP
View
B
Retailer 8
-
£2,785 GBP
View
B
Retailer 9
-
£2,832 GBP
View
Retailer 10
-
£2,901 GBP
View
Price last confirmed 29 days ago
Retailer 11
-
£3,067 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£3,147 GBP
View
B
Retailer 13
-
£3,306 GBP
View
B
Retailer 14
-
£4,517 GBP
View
C
Retailer 15
-
£4,719 GBP
View
Most Expensive
Diamond Quarter
1.02SI1H1338AC33N · Nov 5
£6,291 GBP
View
Price under review
15 more retailers have this diamond
Prices start from £2,178 GBPSave up to £2,540 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+
1.02ct Round
£2,178 GBP