Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7531246302

Certificate GIA 7531246302

Diamond specifications and retailer prices

From £1,844 GBP
HK$19,300 HKD
As of October 31, 2026
Save £2,174 GBP (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,180 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7531246302. Listed at 25 retailers as of October 26, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 7531246302
Dimensions6.40 × 6.37 × 3.93 mm
L/W Ratio1.00
Key to symbols
Feather, Indented Natural, Natural
Top View
6.40 mm6.37 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7531246302
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.6%

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: £1,859 GBP|Low: £1,796 GBP|High: £4,061 GBP|Avg: £2,541 GBP|+0.1%
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
October 31, 2026
Retailer 10£1,844 GBP
Retailer 1£1,859 GBP
Retailer 6£2,099 GBP
Retailer 4£2,129 GBP
Retailer 7£2,214 GBP
Retailer 5£2,293 GBP
Retailer 12£2,315 GBP
Retailer 2£2,369 GBP
Retailer 15£2,426 GBP
Retailer 11£2,471 GBP
Retailer 8£2,573 GBP
Retailer 13£2,732 GBP
Retailer 9£2,949 GBP
Retailer 16£3,476 GBP
Retailer 3£3,573 GBP
Retailer 14£4,018 GBP

29 data points across 16 retailers

25 retailers£1,844 GBP to £4,018 GBP

A
Cheapest Retailer
-
£1,844 GBP
HK$19,300 HKD
A
Retailer 2
-
£1,859 GBP
₹237,265 INR
View
B+
Retailer 3
-
£2,099 GBP
SGD 3,801 SGD
View
B+
Retailer 4
-
£2,129 GBP
$2,853 USD
View
Retailer 5
-
£2,191 GBP
$2,936 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£2,214 GBP
$2,966 USD
View
Final sale: no returns
B+
Retailer 7
-
£2,293 GBP
$3,073 USD
View
B+
Retailer 8
-
£2,315 GBP
View
B
Retailer 9
-
£2,325 GBP
$3,115 USD
View
B
Retailer 10
-
£2,369 GBP
$3,174 USD
View
Retailer 11
-
£2,399 GBP
$3,215 USD
View
Price last confirmed 16 days ago
Retailer 12
-
£2,399 GBP
$3,215 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£2,426 GBP
$3,250 USD
View
B+
Retailer 14
-
£2,471 GBP
View
Retailer 15
-
£2,491 GBP
$3,338 USD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
£2,506 GBP
$3,358 USD
View
B+
Retailer 17
-
£2,570 GBP
SGD 4,653 SGD
View
Retailer 18
-
£2,573 GBP
A$5,303 AUD
View
Price last confirmed 27 days ago
B
Retailer 19
-
£2,732 GBP
€3,486 EUR
View
Retailer 20
-
£2,768 GBP
$3,709 USD
View
Price last confirmed 8 days ago
B
Retailer 21
-
£2,949 GBP
ZAR 63,837 ZAR
View
B
Retailer 22
-
£3,476 GBP
$4,657 USD
View
B
Retailer 23
-
£3,573 GBP
$4,787 USD
View
B
Retailer 24
-
£4,018 GBP
View
Most Expensive
NZ Jewellers
50e08de8-2568-4efa-8c40-f267d318b6f9 · Oct 20
£4,180 GBP
$5,601 USD
View
Price last confirmed 11 days ago
24 more retailers have this diamond
Prices start from £1,844 GBPSave up to £2,174 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
£1,844 GBP