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Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

VG • D/SI1 • GIA 1427402536

Certificate GIA 1427402536

Diamond specifications and retailer prices

From £4,320 GBP
As of November 4, 2026
Save £2,674 GBP (38%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £9,588 GBP at NZ Jewellers · As of November 5, 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 very-good cut grade and certified by GIA 1427402536. Listed at 24 retailers as of November 4, 2026, with a 62% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1427402536
Dimensions6.56 × 6.51 × 3.82 mm
L/W Ratio1.01
Culet sizeVery Small
Top View
6.56 mm6.51 mm1.01 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1427402536
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: Very SmallDepth 58.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £5,315 GBP|Low: £3,995 GBP|High: £8,085 GBP|Avg: £5,801 GBP|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£4,320 GBP
Retailer 7£4,794 GBP
Retailer 8£5,274 GBP
Retailer 1£5,315 GBP
Retailer 6£5,527 GBP
Retailer 3£5,884 GBP
Retailer 2£6,995 GBP
Retailer 4£7,967 GBP

45 data points across 8 retailers

24 retailers£4,320 GBP to £6,995 GBP

B
Cheapest Retailer
-
£4,320 GBP
B
Retailer 2
-
£4,326 GBP
View
B
Retailer 3
-
£4,453 GBP
View
B
Retailer 4
-
£4,529 GBP
View
B
Retailer 5
-
£4,761 GBP
View
Retailer 6
-
£4,794 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£4,794 GBP
View
Final sale: no returns
B
Retailer 8
-
£4,811 GBP
View
B
Retailer 9
-
£4,878 GBP
View
B
Retailer 10
-
£5,194 GBP
View
B
Retailer 11
-
£5,274 GBP
View
B
Retailer 12
-
£5,315 GBP
View
Retailer 13
-
£5,527 GBP
View
Price last confirmed 15 days ago
B
Retailer 14
-
£5,669 GBP
View
B
Retailer 15
-
£5,758 GBP
View
B
Retailer 16
-
£5,758 GBP
View
B
Retailer 17
-
£5,884 GBP
View
B
Retailer 18
-
£5,951 GBP
View
B
Retailer 19
-
£5,993 GBP
View
Retailer 20
-
£6,317 GBP
View
Price last confirmed 14 days ago
B
Retailer 21
-
£6,995 GBP
View
Retailer 22
-
£7,967 GBP
View
Price under review
Retailer 23
-
£9,095 GBP
View
Price under review
Most Expensive
NZ Jewellers
c14f0929-582a-4d2b-b69e-0df40ad5fb30 · Nov 5
£9,588 GBP
$12,905 USD
View
Price under review
23 more retailers have this diamond
Prices start from £4,320 GBPSave up to £2,674 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.

B
1.01ct Round
£4,320 GBP