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Princess|Natural|GIA

1.20ct J SI1 Princess Natural Diamond

EX • J/SI1 • GIA 1568414075

Certificate GIA 1568414075

Diamond specifications and retailer prices

From £1,431 GBP
$1,918 USD
As of November 1, 2026
Save £1,214 GBP (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,646 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.2ct natural princess diamond

This 1.2ct 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 1568414075. Listed at 15 retailers as of November 1, 2026, with prices from £1,431 to £2,646, a £1,214 spread on the same certified stone. Helzberg Diamonds lists it at £2,646. 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.67°
Pavilion angle38.26°
OriginNatural
Grading LabGIA
CertificateGIA 1568414075
Dimensions5.70 × 5.68 × 4.16 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.70 mm5.68 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568414075
Side View
Table 72.0%Crown 30.67°Girdle: STK-THKPavilion 38.26°Culet: NoneDepth 73.3%

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: £2,646 GBP|Low: £1,431 GBP|High: £2,646 GBP|Avg: £1,762 GBP
Helzberg Diamonds
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
Retailer 15
November 2, 2026
Retailer 5£1,431 GBP
Retailer 7£1,449 GBP
Retailer 15£1,464 GBP
Retailer 11£1,476 GBP
Retailer 13£1,481 GBP
Retailer 10£1,485 GBP
Retailer 4£1,608 GBP
Retailer 8£1,616 GBP
Retailer 12£1,756 GBP
Retailer 3£1,875 GBP
Retailer 6£1,890 GBP
Retailer 2£2,073 GBP
Retailer 9£2,082 GBP
Retailer 14£2,250 GBP
Helzberg Diamonds£2,646 GBP

33 data points across 15 retailers

15 retailers£1,431 GBP to £2,646 GBP

B+
Cheapest Retailer
-
£1,431 GBP
$1,918 USD
B+
Retailer 2
-
£1,449 GBP
SGD 2,624 SGD
View
B+
Retailer 3
-
£1,464 GBP
$1,962 USD
View
B+
Retailer 4
-
£1,476 GBP
$1,978 USD
View
B+
Retailer 5
-
£1,481 GBP
$1,984 USD
View
B+
Retailer 6
-
£1,485 GBP
$1,990 USD
View
B
Retailer 7
-
£1,608 GBP
SGD 2,911 SGD
View
B+
Retailer 8
-
£1,616 GBP
View
B+
Retailer 9
-
£1,756 GBP
$2,353 USD
View
B
Retailer 10
-
£1,875 GBP
$2,513 USD
View
B
Retailer 11
-
£2,073 GBP
€2,645 EUR
View
B
Retailer 12
-
£2,082 GBP
$2,790 USD
View
B
Retailer 13
-
£2,250 GBP
$3,015 USD
View
B
Retailer 14
-
£2,457 GBP
$3,292 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMOKHKGNL · Nov 1
£2,646 GBP
$3,545 USD
View
14 more retailers have this diamond
Prices start from £1,431 GBPSave up to £1,214 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+
1.20ct Princess
£1,431 GBP