Princess|Natural|GIA

1.70ct I SI1 Princess Natural Diamond

EX • I/SI1

Diamond specifications and retailer prices

From £3,497 GBP
$4,693 USD
As of November 2, 2026
Save £1,027 GBP (23%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,730 GBP at Aurelinne · As of September 6, 2026
View at Aurelinne

About this 1.7ct natural princess diamond

This 1.7ct natural princess sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 6 retailers as of November 2, 2026, with a 29% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions6.53 × 6.31 × 4.81 mm
L/W Ratio1.03
Top View
6.53 mm6.31 mm1.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 75.0%CrownGirdle: Very ThinPavilionCulet: NoneDepth 76.3%

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 2
Current: £4,730 GBP|Low: £3,458 GBP|High: £4,730 GBP|Avg: £4,183 GBP
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 30, 2026
Retailer 3£3,497 GBP
Retailer 6£3,995 GBP
Retailer 4£4,099 GBP
Retailer 5£4,099 GBP
Retailer 7£4,213 GBP
Retailer 2£4,345 GBP
Retailer 8£4,524 GBP
Aurelinne£4,730 GBP

12 data points across 8 retailers

6 retailers£3,497 GBP to £4,524 GBP

A
Cheapest Retailer
-
£3,497 GBP
$4,693 USD
B+
Retailer 2
-
£3,995 GBP
CA$7,445 CAD
View
Retailer 3
-
£4,099 GBP
$5,500 USD
View
Price last confirmed 52 days ago
B+
Retailer 4
-
£4,213 GBP
$5,653 USD
View
B
Retailer 5
-
£4,524 GBP
$6,071 USD
View
Most Expensive
Aurelinne
709df07d-bca0-412e-8748-10df5521be68 · Sep 6
£4,730 GBP
$6,347 USD
View
Price last confirmed 57 days ago
5 more retailers have this diamond
Prices start from £3,497 GBPSave up to £1,027 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 Princess
£3,497 GBP