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Princess|Natural|GIA

1.00ct J SI1 Princess Natural Diamond

EX • J/SI1 • GIA 1236349634

Certificate GIA 1236349634

Diamond specifications and retailer prices

From £1,379 GBP
$1,848 USD
As of November 1, 2026
Save £1,812 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,191 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural princess diamond

This 1ct natural princess sits in the classic one-carat band, graded J 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 1236349634. Listed at 16 retailers as of October 30, 2026, with prices from £1,379 to £3,191, a £1,812 spread on the same certified stone. NZ Jewellers lists it at £3,191. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236349634
Dimensions5.55 × 5.45 × 3.97 mm
L/W Ratio1.02
Cert comments
Additional clouds pinpoints and surface graining are not shown.
Key to symbols
Crystal, Feather, Cloud
Top View
5.55 mm5.45 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236349634
Side View
Table 71.0%CrownGirdle: ThickPavilionCulet: NoneDepth 72.8%

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 1
Current: £3,191 GBP|Low: £1,143 GBP|High: £3,191 GBP|Avg: £1,923 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6£1,409 GBP
Retailer 9£1,489 GBP
Retailer 3£1,531 GBP
Retailer 10£1,549 GBP
Retailer 8£1,596 GBP
Retailer 4£1,876 GBP
Retailer 7£1,882 GBP
Retailer 2£2,084 GBP
Retailer 5£2,688 GBP
NZ Jewellers£3,191 GBP

45 data points across 10 retailers

16 retailers£1,379 GBP to £3,191 GBP

B
Cheapest Retailer
-
£1,379 GBP
$1,848 USD
B+
Retailer 2
-
£1,409 GBP
$1,888 USD
View
Final sale: no returns
B
Retailer 3
-
£1,489 GBP
$1,995 USD
View
B
Retailer 4
-
£1,526 GBP
$2,045 USD
View
B
Retailer 5
-
£1,531 GBP
View
B
Retailer 6
-
£1,549 GBP
$2,075 USD
View
B
Retailer 7
-
£1,567 GBP
$2,099 USD
View
B
Retailer 8
-
£1,596 GBP
$2,139 USD
View
B
Retailer 9
-
£1,630 GBP
$2,183 USD
View
B
Retailer 10
-
£1,697 GBP
A$3,498 AUD
View
B
Retailer 11
-
£1,761 GBP
$2,360 USD
View
B
Retailer 12
-
£1,876 GBP
ZAR 40,610 ZAR
View
Retailer 13
-
£1,882 GBP
A$3,880 AUD
View
Price last confirmed 27 days ago
B
Retailer 14
-
£2,084 GBP
€2,660 EUR
View
B
Retailer 15
-
£2,688 GBP
View
Most Expensive
C
NZ Jewellers
c3ae4a0e-2561-47e8-acfa-fb6b705b4268 · Oct 30
£3,191 GBP
$4,276 USD
View
15 more retailers have this diamond
Prices start from £1,379 GBPSave up to £1,812 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+
1.00ct Princess
£1,379 GBP