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Princess|Natural|GIA

1.70ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 2378563495

Certificate GIA 2378563495

Diamond specifications and retailer prices

From £4,929 GBP
$6,614 USD
As of October 30, 2026
Save £1,690 GBP (26%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £6,619 GBP at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

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 2378563495. Listed at 5 retailers as of October 30, 2026, with prices from £4,929 to £6,619, a £1,690 spread on the same certified stone. 77 Diamonds lists it at £6,619. 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
CertificateGIA 2378563495
Dimensions6.42 × 6.33 × 4.61 mm
L/W Ratio1.01
Top View
6.42 mm6.33 mm1.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2378563495
Side View
Table 71.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 72.9%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £6,619 GBP|Low: £4,879 GBP|High: £6,718 GBP|Avg: £5,624 GBP|-0.4%
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£4,929 GBP
Retailer 2£5,396 GBP
77 Diamonds£6,619 GBP

30 data points across 3 retailers

5 retailers£4,929 GBP to £6,619 GBP

B+
Cheapest Retailer
-
£4,929 GBP
$6,614 USD
B
Retailer 2
-
£5,255 GBP
A$10,849 AUD
View
B+
Retailer 3
-
£5,351 GBP
$7,181 USD
View
B+
Retailer 4
-
£5,396 GBP
$7,241 USD
View
Final sale: no returns
Most Expensive
B
77 Diamonds
PRIZCWSNAX6V · Oct 31
£6,619 GBP
View
4 more retailers have this diamond
Prices start from £4,929 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 Princess
£4,929 GBP