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Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

GD • E/SI1 • GIA 3485708329

Certificate GIA 3485708329

Diamond specifications and retailer prices

From £1,217 GBP
As of November 5, 2026
Save £2,530 GBP (68%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,747 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 3485708329. Listed at 23 retailers as of November 5, 2026, with prices from £1,217 to £3,747, a £2,530 spread on the same certified stone. Diamond Quarter lists it at £3,747. 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

1.00
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 3485708329
Dimensions6.20 × 6.14 × 3.98 mm
L/W Ratio1.01
Top View
6.20 mm6.14 mm1.00 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3485708329
Side View
Table 56.0%Crown 38.5°Girdle: ThickPavilion 39.8°Culet: NoneDepth 64.9%

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: Nov 5
Current: £1,642 GBP|Low: £1,189 GBP|High: £3,660 GBP|Avg: £1,718 GBP|-13.3%
Retailer 1
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 20£1,217 GBP
Retailer 9£1,259 GBP
Retailer 4£1,312 GBP
Retailer 11£1,318 GBP
Retailer 17£1,340 GBP
Retailer 13£1,351 GBP
Retailer 14£1,430 GBP
Retailer 10£1,438 GBP
Retailer 2£1,452 GBP
Retailer 12£1,482 GBP
Retailer 18£1,493 GBP
Retailer 8£1,519 GBP
Retailer 6£1,590 GBP
Retailer 7£1,590 GBP
Retailer 1£1,642 GBP
Retailer 19£1,675 GBP
Retailer 15£1,731 GBP
Retailer 21£1,956 GBP
Retailer 16£2,039 GBP
Retailer 5£2,756 GBP
Retailer 3£3,350 GBP

22 data points across 21 retailers

23 retailers£1,217 GBP to £3,747 GBP

A
Cheapest Retailer
-
£1,217 GBP
A
Retailer 2
-
£1,259 GBP
View
A
Retailer 3
-
£1,312 GBP
View
A
Retailer 4
-
£1,318 GBP
View
A
Retailer 5
-
£1,340 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,351 GBP
View
Retailer 7
-
£1,430 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£1,438 GBP
View
A
Retailer 9
-
£1,452 GBP
View
A
Retailer 10
-
£1,482 GBP
View
A
Retailer 11
-
£1,493 GBP
View
A
Retailer 12
-
£1,519 GBP
View
A
Retailer 13
-
£1,590 GBP
View
A
Retailer 14
-
£1,590 GBP
View
A
Retailer 15
-
£1,642 GBP
View
A
Retailer 16
-
£1,675 GBP
View
A
Retailer 17
-
£1,731 GBP
View
A
Retailer 18
-
£1,956 GBP
View
B+
Retailer 19
-
£2,039 GBP
View
Retailer 20
-
£2,186 GBP
View
Price last confirmed 30 days ago
B
Retailer 21
-
£2,756 GBP
View
B
Retailer 22
-
£3,350 GBP
View
Most Expensive
B
Diamond Quarter
1.0SI1E34298C9AN · Nov 5
£3,747 GBP
View
22 more retailers have this diamond
Prices start from £1,217 GBPSave up to £2,530 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
1.00ct Round
£1,217 GBP