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Princess|Natural|GIA

1.21ct H SI2 Princess Natural Diamond

EX • H/SI2 • GIA 5566714385

Certificate GIA 5566714385

Diamond specifications and retailer prices

From £1,365 GBP
As of November 4, 2026
Save £1,105 GBP (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,470 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural princess diamond

This 1.21ct natural princess sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566714385. Listed at 10 retailers as of November 4, 2026, with prices from £1,365 to £2,470, a £1,105 spread on the same certified stone. Helzberg Diamonds lists it at £2,470. 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

1.21
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.71°
Pavilion angle39.45°
OriginNatural
Grading LabGIA
CertificateGIA 5566714385
Dimensions5.87 × 5.77 × 4.22 mm
L/W Ratio1.02
Culet sizeNone
Top View
5.87 mm5.77 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566714385
Side View
Table 74.0%Crown 28.71°Girdle: STK-THKPavilion 39.45°Culet: NDepth 73.1%

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 4
Current: £2,470 GBP|Low: £1,365 GBP|High: £2,470 GBP|Avg: £1,650 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£1,365 GBP
Retailer 6£1,377 GBP
Retailer 2£1,497 GBP
Retailer 10£1,499 GBP
Retailer 5£1,565 GBP
Retailer 7£1,576 GBP
Retailer 3£1,644 GBP
Retailer 9£1,772 GBP
Retailer 4£2,281 GBP
Helzberg Diamonds£2,470 GBP

9 data points across 10 retailers

10 retailers£1,365 GBP to £2,470 GBP

A
Cheapest Retailer
-
£1,365 GBP
A
Retailer 2
-
£1,377 GBP
View
A
Retailer 3
-
£1,497 GBP
View
A
Retailer 4
-
£1,499 GBP
View
A
Retailer 5
-
£1,565 GBP
View
A
Retailer 6
-
£1,576 GBP
View
B+
Retailer 7
-
£1,644 GBP
View
B+
Retailer 8
-
£1,772 GBP
View
B
Retailer 9
-
£2,281 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRLLMMNHKJOL · Nov 6
£2,470 GBP
$3,306 USD
View
9 more retailers have this diamond
Prices start from £1,365 GBPSave up to £1,105 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
1.21ct Princess
£1,365 GBP