Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

VG • H/SI1 • GIA 7558404283

Certificate GIA 7558404283

Diamond specifications and retailer prices

From £1,398 GBP
₹178,376 INR
As of October 31, 2026
Save £2,616 GBP (65%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,014 GBP at NZ Jewellers · As of October 30, 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 very-good cut grade and certified by GIA 7558404283. Listed at 22 retailers as of October 30, 2026, with prices from £1,398 to £4,014, a £2,616 spread on the same certified stone. NZ Jewellers lists it at £4,014. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7558404283
Dimensions6.23 × 6.16 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.23 mm6.16 mm1.00 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558404283
Side View
Table 59.0%Crown 37.5°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 64.7%

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: £4,014 GBP|Low: £1,398 GBP|High: £4,134 GBP|Avg: £2,117 GBP|-2.9%
NZ Jewellers
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
October 31, 2026
Retailer 16£1,398 GBP
Retailer 11£1,414 GBP
Retailer 13£1,525 GBP
Retailer 9£1,679 GBP
Retailer 4£1,746 GBP
Retailer 2£1,755 GBP
Retailer 3£1,776 GBP
Retailer 15£1,779 GBP
Retailer 10£1,899 GBP
Retailer 6£1,920 GBP
Retailer 14£1,920 GBP
Retailer 12£1,988 GBP
Retailer 7£2,008 GBP
Retailer 19£2,019 GBP
Retailer 18£2,058 GBP
Retailer 21£2,193 GBP
Retailer 20£2,251 GBP
Retailer 17£2,336 GBP
Retailer 8£2,347 GBP
Retailer 5£3,382 GBP
NZ Jewellers£4,014 GBP

22 data points across 21 retailers

22 retailers£1,398 GBP to £4,014 GBP

A
Cheapest Retailer
-
£1,398 GBP
₹178,376 INR
A
Retailer 2
-
£1,414 GBP
HK$14,800 HKD
View
A
Retailer 3
-
£1,525 GBP
$2,043 USD
View
Retailer 4
-
£1,679 GBP
$2,250 USD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
£1,746 GBP
$2,340 USD
View
B+
Retailer 6
-
£1,755 GBP
$2,351 USD
View
Final sale: no returns
B+
Retailer 7
-
£1,776 GBP
$2,379 USD
View
B+
Retailer 8
-
£1,779 GBP
$2,383 USD
View
B+
Retailer 9
-
£1,899 GBP
$2,545 USD
View
B+
Retailer 10
-
£1,920 GBP
$2,572 USD
View
B+
Retailer 11
-
£1,920 GBP
$2,572 USD
View
B+
Retailer 12
-
£1,988 GBP
SGD 3,599 SGD
View
B+
Retailer 13
-
£2,008 GBP
$2,691 USD
View
B+
Retailer 14
-
£2,019 GBP
View
B+
Retailer 15
-
£2,058 GBP
$2,757 USD
View
B+
Retailer 16
-
£2,193 GBP
$2,939 USD
View
B+
Retailer 17
-
£2,251 GBP
€2,873 EUR
View
Retailer 18
-
£2,259 GBP
A$4,656 AUD
View
Price last confirmed 24 days ago
B
Retailer 19
-
£2,336 GBP
ZAR 50,573 ZAR
View
B
Retailer 20
-
£2,347 GBP
$3,145 USD
View
B
Retailer 21
-
£3,382 GBP
View
Most Expensive
B
NZ Jewellers
038b0f75-2982-4049-9341-c61daff950d1 · Oct 30
£4,014 GBP
$5,378 USD
View
21 more retailers have this diamond
Prices start from £1,398 GBPSave up to £2,616 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
£1,398 GBP