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1.70ct M SI2 Round Natural Diamond

EX • M/SI2 • HRD 250000152531

Certificate HRD 250000152531

Diamond specifications and retailer prices

From £1,793 GBP
As of November 5, 2026
Save £1,956 GBP (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,748 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 250000152531. Listed at 6 retailers as of November 5, 2026, with prices from £1,793 to £3,748, a £1,956 spread on the same certified stone. NZ Jewellers lists it at £3,748. 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

1.70
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.9°
Pavilion angle41°
OriginNatural
Grading LabHRD
CertificateHRD 250000152531
Dimensions7.62 × 7.56 × 4.72 mm
L/W Ratio1.01
Star length50%
Culet sizePointed
Top View
7.62 mm7.56 mm1.70 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateHRD 250000152531
Side View
Table 59.0%Crown 35.9°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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 5
Current: £3,748 GBP|Low: £1,644 GBP|High: £3,748 GBP|Avg: £2,142 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7£1,644 GBP
Retailer 3£1,793 GBP
Retailer 5£1,793 GBP
Retailer 6£1,876 GBP
Retailer 4£2,068 GBP
Retailer 2£2,222 GBP
NZ Jewellers£3,748 GBP

22 data points across 7 retailers

6 retailers£1,793 GBP to £3,748 GBP

A
Cheapest Retailer
-
£1,793 GBP
Retailer 2
-
£1,793 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£1,876 GBP
View
B+
Retailer 4
-
£2,068 GBP
View
B+
Retailer 5
-
£2,222 GBP
View
Most Expensive
B
NZ Jewellers
6ba448e5-a21f-411e-b61a-b370e27ee989 · Nov 5
£3,748 GBP
$5,045 USD
View
5 more retailers have this diamond
Prices start from £1,793 GBPSave up to £1,956 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
1.70ct Round
£1,793 GBP