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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6223323213

Certificate GIA 6223323213

Diamond specifications and retailer prices

From £1,612 GBP
As of November 6, 2026
Save £2,763 GBP (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,374 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6223323213. Listed at 19 retailers as of November 5, 2026, with prices from £1,612 to £4,374, a £2,763 spread on the same certified stone. Diamond Quarter lists it at £4,374. 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

1.00
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6223323213
Dimensions6.40 × 6.35 × 3.95 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.40 mm6.35 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6223323213
Side View
Table 57.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.2%

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 6
Current: £1,921 GBP|Low: £1,583 GBP|High: £3,661 GBP|Avg: £2,231 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£1,620 GBP
Retailer 6£1,690 GBP
Retailer 7£1,727 GBP
Retailer 1£1,921 GBP
Retailer 2£2,160 GBP
Retailer 3£2,401 GBP
Retailer 4£3,608 GBP

38 data points across 7 retailers

19 retailers£1,612 GBP to £4,374 GBP

Retailer 1
-
£1,537 GBP
Price last confirmed 26 days ago
A
Retailer 2
-
£1,612 GBP
View
A
Retailer 3
-
£1,620 GBP
View
A
Retailer 4
-
£1,641 GBP
View
A
Retailer 5
-
£1,690 GBP
View
B+
Retailer 6
-
£1,727 GBP
View
Final sale: no returns
B+
Retailer 7
-
£1,871 GBP
View
B+
Retailer 8
-
£1,902 GBP
View
B+
Retailer 9
-
£1,921 GBP
View
B+
Retailer 10
-
£1,957 GBP
View
B+
Retailer 11
-
£2,147 GBP
View
B+
Retailer 12
-
£2,147 GBP
View
B+
Retailer 13
-
£2,159 GBP
View
B+
Retailer 14
-
£2,160 GBP
View
B+
Retailer 15
-
£2,214 GBP
View
B
Retailer 16
-
£2,401 GBP
View
B
Retailer 17
-
£3,608 GBP
View
B
Retailer 18
-
£4,318 GBP
View
Most Expensive
B
Diamond Quarter
1.0SI2H6213D6DDN · Nov 5
£4,374 GBP
View
18 more retailers have this diamond
Prices start from £1,612 GBPSave up to £2,763 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
£1,612 GBP