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1.30ct D SI1 Round Natural Diamond

EX • D/SI1 • HRD 260000237756

Certificate HRD 260000237756

Diamond specifications and retailer prices

From £2,609 GBP
As of November 4, 2026
Save £2,557 GBP (50%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,166 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by HRD 260000237756. Listed at 7 retailers as of November 4, 2026, with prices from £2,609 to £5,166, a £2,557 spread on the same certified stone. NZ Jewellers lists it at £5,166. 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

1.30
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.1°
Pavilion angle41.3°
OriginNatural
Grading LabHRD
CertificateHRD 260000237756
Dimensions6.92 × 6.96 × 4.34 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.92 mm6.96 mm1.30 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateHRD 260000237756
Side View
Table 57.0%Crown 33.1°Girdle: MediumPavilion 41.3°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: Nov 4
Current: £5,166 GBP|Low: £2,609 GBP|High: £5,286 GBP|Avg: £3,612 GBP|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£2,609 GBP
Retailer 3£2,923 GBP
Retailer 2£2,933 GBP
Retailer 4£3,097 GBP
Retailer 7£3,113 GBP
Retailer 5£4,958 GBP
NZ Jewellers£5,166 GBP

35 data points across 7 retailers

7 retailers£2,609 GBP to £5,166 GBP

A
Cheapest Retailer
-
£2,609 GBP
A
Retailer 2
-
£2,923 GBP
View
A
Retailer 3
-
£2,933 GBP
View
A
Retailer 4
-
£3,097 GBP
View
A
Retailer 5
-
£3,113 GBP
View
B+
Retailer 6
-
£4,958 GBP
View
Most Expensive
B+
NZ Jewellers
760e2539-5c23-4bbc-b1f3-5a0ff55221b2 · Nov 5
£5,166 GBP
$6,953 USD
View
6 more retailers have this diamond
Prices start from £2,609 GBPSave up to £2,557 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
1.30ct Round
£2,609 GBP