Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2546684324

Certificate GIA 2546684324

Diamond specifications and retailer prices

From £1,930 GBP
As of November 4, 2026
Save £2,565 GBP (57%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £4,495 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546684324. Listed at 24 retailers as of November 4, 2026, with a 133% 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2546684324
Dimensions6.38 × 6.43 × 3.97 mm
L/W Ratio1.01
Star length50%
Top View
6.38 mm6.43 mm1.01 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2546684324
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 4
Current: £2,469 GBP|Low: £1,930 GBP|High: £4,367 GBP|Avg: £2,785 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,930 GBP
Retailer 5£1,931 GBP
Retailer 9£2,381 GBP
Retailer 1£2,469 GBP
Retailer 3£2,638 GBP
Retailer 2£2,678 GBP
Retailer 6£2,816 GBP
Retailer 4£3,149 GBP
Retailer 7£4,303 GBP

28 data points across 9 retailers

24 retailers£1,930 GBP to £4,495 GBP

A
Cheapest Retailer
-
£1,930 GBP
A
Retailer 2
-
£1,931 GBP
View
A
Retailer 3
-
£2,291 GBP
View
B+
Retailer 4
-
£2,326 GBP
View
B+
Retailer 5
-
£2,381 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,469 GBP
View
B+
Retailer 7
-
£2,485 GBP
View
Retailer 8
-
£2,580 GBP
View
Price last confirmed 11 days ago
Retailer 9
-
£2,580 GBP
View
Price last confirmed 50 days ago
Retailer 10
-
£2,580 GBP
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£2,638 GBP
View
B+
Retailer 12
-
£2,678 GBP
View
Retailer 13
-
£2,679 GBP
View
Price last confirmed 12 days ago
B+
Retailer 14
-
£2,687 GBP
View
Retailer 15
-
£2,766 GBP
View
Price last confirmed 33 days ago
B+
Retailer 16
-
£2,816 GBP
View
B+
Retailer 17
-
£2,830 GBP
View
Retailer 18
-
£2,977 GBP
View
Price last confirmed 45 days ago
Retailer 19
-
£2,977 GBP
View
Price last confirmed 10 days ago
B+
Retailer 20
-
£3,149 GBP
View
B
Retailer 21
-
£4,303 GBP
View
B
Retailer 22
-
£4,495 GBP
View
Retailer 23
-
£4,495 GBP
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
5d0eee9b-6ff8-4db1-b793-df30bf316f71 · Oct 27
£4,495 GBP
$6,050 USD
View
Price last confirmed 10 days ago
23 more retailers have this diamond
Prices start from £1,930 GBPSave up to £2,565 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
1.01ct Round
£1,930 GBP