CaratHunter
Plans
Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7566188827

Certificate GIA 7566188827

Diamond specifications and retailer prices

From £1,163 GBP
SGD 2,106 SGD
As of October 31, 2026
Save £1,095 GBP (48%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,258 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 7566188827. Listed at 8 retailers as of October 26, 2026, with prices from £1,163 to £2,258, a £1,095 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,258. 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
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7566188827
Dimensions6.37 × 6.41 × 4.00 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.37 mm6.41 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7566188827
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 41.4°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: £1,938 GBP|Low: £1,163 GBP|High: £2,872 GBP|Avg: £1,868 GBP|-15.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
October 30, 2026
Retailer 4£1,163 GBP
Retailer 2£1,358 GBP
Retailer 6£1,491 GBP
Retailer 3£1,749 GBP
Retailer 5£1,764 GBP
Retailer 1£1,938 GBP
Retailer 7£2,087 GBP
Wholesale Diamonds Direct£2,258 GBP

29 data points across 8 retailers

8 retailers£1,163 GBP to £2,258 GBP

A
Cheapest Retailer
-
£1,163 GBP
SGD 2,106 SGD
A
Retailer 2
-
£1,358 GBP
$1,819 USD
View
A
Retailer 3
-
£1,491 GBP
SGD 2,700 SGD
View
A
Retailer 4
-
£1,749 GBP
View
A
Retailer 5
-
£1,764 GBP
$2,363 USD
View
B+
Retailer 6
-
£1,938 GBP
€2,473 EUR
View
B+
Retailer 7
-
£2,087 GBP
$2,797 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
611346686 · Oct 26
£2,258 GBP
$3,026 USD
View
7 more retailers have this diamond
Prices start from £1,163 GBPSave up to £1,095 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
£1,163 GBP