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Oval|Natural|GIA

1.70ct M SI2 Oval Natural Diamond

M/SI2 • GIA 2557937165

Certificate GIA 2557937165

Diamond specifications and retailer prices

From £2,277 GBP
As of November 5, 2026
Save £1,690 GBP (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,967 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.7ct natural oval diamond

This 1.7ct natural oval sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included) and certified by GIA 2557937165. Listed at 7 retailers as of November 5, 2026, with prices from £2,277 to £3,967, a £1,690 spread on the same certified stone. NZ Jewellers lists it at £3,967. 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

1.70
Carat
M
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557937165
Dimensions9.07 × 6.56 × 4.19 mm
L/W Ratio1.38
Culet sizeNone
Top View
9.07 mm6.56 mm1.70 ctM / SI2
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557937165
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,967 GBP|Low: £1,857 GBP|High: £4,385 GBP|Avg: £2,568 GBP|-9.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£1,865 GBP
Retailer 4£2,277 GBP
Retailer 6£2,277 GBP
Retailer 2£2,329 GBP
Retailer 7£2,365 GBP
Retailer 5£2,628 GBP
Retailer 3£2,664 GBP
NZ Jewellers£3,967 GBP

29 data points across 8 retailers

7 retailers£2,277 GBP to £3,967 GBP

Retailer 1
-
£2,277 GBP
Price last confirmed 8 days ago
B+
Retailer 2
-
£2,277 GBP
View
B+
Retailer 3
-
£2,329 GBP
View
B+
Retailer 4
-
£2,365 GBP
View
B
Retailer 5
-
£2,628 GBP
View
B
Retailer 6
-
£2,664 GBP
View
Most Expensive
C
NZ Jewellers
0ed82e6c-ceda-4806-b961-116e4083b899 · Nov 5
£3,967 GBP
$5,310 USD
View
6 more retailers have this diamond
Prices start from £2,277 GBPSave up to £1,690 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+
1.70ct Oval
£2,277 GBP