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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6562391418

Certificate GIA 6562391418

Diamond specifications and retailer prices

From £1,318 GBP
HK$13,800 HKD
As of October 31, 2026
Save £1,756 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,075 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562391418. Listed at 13 retailers as of October 26, 2026, with prices from £1,318 to £3,075, a £1,756 spread on the same certified stone. MOH London lists it at £3,075. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6562391418
Dimensions6.32 × 6.37 × 3.96 mm
L/W Ratio1.01
Top View
6.32 mm6.37 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562391418
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

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 31
Current: £3,075 GBP|Low: £1,309 GBP|High: £3,260 GBP|Avg: £1,966 GBP|-5.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5£1,318 GBP
Retailer 2£1,338 GBP
Retailer 12£1,584 GBP
Retailer 8£1,691 GBP
Retailer 10£1,750 GBP
Retailer 4£1,840 GBP
Retailer 11£1,857 GBP
Retailer 7£1,912 GBP
Retailer 9£2,089 GBP
Retailer 6£2,154 GBP
Retailer 3£2,558 GBP
MOH London£3,075 GBP

23 data points across 12 retailers

13 retailers£1,318 GBP to £3,075 GBP

A
Cheapest Retailer
-
£1,318 GBP
HK$13,800 HKD
A
Retailer 2
-
£1,338 GBP
₹170,683 INR
View
A
Retailer 3
-
£1,584 GBP
$2,122 USD
View
A
Retailer 4
-
£1,691 GBP
View
A
Retailer 5
-
£1,750 GBP
$2,345 USD
View
B+
Retailer 6
-
£1,840 GBP
SGD 3,331 SGD
View
B+
Retailer 7
-
£1,857 GBP
$2,488 USD
View
B+
Retailer 8
-
£1,912 GBP
View
B+
Retailer 9
-
£2,089 GBP
€2,666 EUR
View
B+
Retailer 10
-
£2,154 GBP
ZAR 46,627 ZAR
View
Retailer 11
-
£2,263 GBP
A$4,666 AUD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
£2,558 GBP
$3,427 USD
View
Most Expensive
B
MOH London
F1A604DBC · Oct 26
£3,075 GBP
View
12 more retailers have this diamond
Prices start from £1,318 GBPSave up to £1,756 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
£1,318 GBP