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Round|Natural|GIA

1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 7561239225

Certificate GIA 7561239225

Diamond specifications and retailer prices

From £1,971 GBP
As of November 6, 2026
Save £2,584 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,554 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7561239225. Listed at 13 retailers as of November 5, 2026, with prices from £1,971 to £4,554, a £2,584 spread on the same certified stone. NZ Jewellers lists it at £4,554. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 7561239225
Dimensions7.62 × 7.64 × 4.71 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Crystal, Pinpoint, Natural
Top View
7.62 mm7.64 mm1.70 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7561239225
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.7%

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 6
Current: £4,554 GBP|Low: £1,971 GBP|High: £4,721 GBP|Avg: £2,805 GBP|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 2£1,971 GBP
Retailer 4£2,321 GBP
Retailer 3£2,477 GBP
Retailer 14£2,518 GBP
Retailer 5£2,614 GBP
Retailer 12£2,614 GBP
Retailer 9£2,645 GBP
Retailer 13£2,714 GBP
Retailer 10£2,722 GBP
Retailer 7£2,864 GBP
Retailer 11£2,897 GBP
Retailer 6£3,016 GBP
Retailer 8£3,190 GBP
NZ Jewellers£4,554 GBP

45 data points across 14 retailers

13 retailers£1,971 GBP to £4,554 GBP

A
Cheapest Retailer
-
£1,971 GBP
B+
Retailer 2
-
£2,321 GBP
View
B+
Retailer 3
-
£2,477 GBP
View
B+
Retailer 4
-
£2,518 GBP
View
B+
Retailer 5
-
£2,614 GBP
View
Retailer 6
-
£2,614 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£2,645 GBP
View
B+
Retailer 8
-
£2,714 GBP
View
B+
Retailer 9
-
£2,722 GBP
View
B+
Retailer 10
-
£2,864 GBP
View
B
Retailer 11
-
£3,016 GBP
View
B
Retailer 12
-
£3,190 GBP
View
Most Expensive
B
NZ Jewellers
00da58f5-5d97-4504-814f-0c61b9105c8f · Nov 5
£4,554 GBP
$6,096 USD
View
12 more retailers have this diamond
Prices start from £1,971 GBPSave up to £2,584 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
£1,971 GBP